diff --git a/backend/src/controllers.ts b/backend/src/controllers.ts
index 427905f..416f6f0 100644
--- a/backend/src/controllers.ts
+++ b/backend/src/controllers.ts
@@ -1,9 +1,9 @@
 import { Request, Response } from 'express';
+import jwt from 'jsonwebtoken';
 import { getRepository } from 'typeorm';
 import { Project } from './entities/Project';
-import { ProjectMember } from './entities/ProjectMember'
+import { ProjectMember } from './entities/ProjectMember';
 import { Task } from './entities/Task';
-import jwt from 'jsonwebtoken';
 import { User } from './entities/User';
 
 const SECRET_KEY = process.env.JWT_SECRET || 'your_secret_key';
diff --git a/cool_todo_manager/src/components/CardGroup/CardGroup.tsx b/cool_todo_manager/src/components/CardGroup/CardGroup.tsx
index fa0ed1d..7185d91 100644
--- a/cool_todo_manager/src/components/CardGroup/CardGroup.tsx
+++ b/cool_todo_manager/src/components/CardGroup/CardGroup.tsx
@@ -6,12 +6,15 @@ import {
 	useGetTasksForGroupQuery,
 } from '../../services/mainApi';
 import TaskCard from '../TaskCard/TaskCard';
-import CreateTaskDialog from './CreateTaskDialog/CreateTaskDialog';
-import DeleteProjectDialog from './DeleteProjectDialog/CreateTaskDialog';
+import AddUserToProjectDialog from '../dialogs/AddUserToProjectDialog/AddUserToProjectDialog';
+import CreateTaskDialog from '../dialogs/CreateTaskDialog/CreateTaskDialog';
+import DeleteProjectDialog from '../dialogs/DeleteProjectDialog/CreateTaskDialog';
+
+import { PlusIcon } from '@radix-ui/react-icons';
 
 type TCardGroup = {
 	id: string;
-	title: string;
+	title: string; 
 };
 
 export default function CardGroup(props: TCardGroup) {
@@ -56,14 +59,19 @@ export default function CardGroup(props: TCardGroup) {
 					</Box>
 					<Flex gap={'2'} className="mx-auto w-full mt-2">
 						<CreateTaskDialog onClose={createTask}>
-							<Button>Add Task</Button>
+							<Button className='!grow-1'>Add Task</Button>
 						</CreateTaskDialog>
 						<DeleteProjectDialog onClose={deleteGroup}>
-							<Button color="red" onClick={deleteGroup}>
-								Delete Project
-							</Button>
+							<Button className='!grow-1' color="red">Delete Project</Button>
 						</DeleteProjectDialog>
 					</Flex>
+
+					<AddUserToProjectDialog projectId={+props.id}>
+						<Button className='!mt-2'>
+							<PlusIcon />
+							Add user	
+						</Button>
+					</AddUserToProjectDialog>
 				</Box>
 			)}
 		</Droppable>
diff --git a/cool_todo_manager/src/components/MainBoard/MainBoard.tsx b/cool_todo_manager/src/components/MainBoard/MainBoard.tsx
index 94c6331..41854df 100644
--- a/cool_todo_manager/src/components/MainBoard/MainBoard.tsx
+++ b/cool_todo_manager/src/components/MainBoard/MainBoard.tsx
@@ -2,41 +2,24 @@ import { DragDropContext } from '@hello-pangea/dnd';
 import { Button, Flex, ScrollArea } from '@radix-ui/themes';
 import {
 	useCreateProjectMutation,
-	useCreateTaskMutation,
-	useGetProjectsQuery,
+	useGetProjectsQuery
 } from '../../services/mainApi';
 import CardGroup from '../CardGroup/CardGroup';
+import CreateProjectDialog from '../dialogs/CreateProjectDialog/CreateProjectDialog';
 
 export default function MainBoard() {
 	const dragEndHandle = (result: TDragResult) => {
 		result;
 	};
 
-	const [create] = useCreateTaskMutation();
 	const [createProject] = useCreateProjectMutation();
 	const { data: cringe, isLoading } = useGetProjectsQuery({});
 
-	const onClick = () => {
-		create({
-			title: 'My Task 123',
-			projectId: 4,
-			assignedUserId: 1,
-			deadline: '2025-03-01T12:00:00Z',
-		});
-	};
-
-	const onClick1 = () => {
-		createProject({
-			title: 'My project test 12',
-			description: 'Test desc 123 123 123',
-		});
-	};
-
 	return (
 		<>
 			<DragDropContext onDragEnd={dragEndHandle}>
-				<ScrollArea scrollbars='horizontal' className='pb-3'>
-					<Flex gap={'2'} className='min-w-fit'>
+				<ScrollArea scrollbars="horizontal" className="pb-3">
+					<Flex gap={'2'} className="min-w-fit">
 						{!isLoading &&
 							(cringe as any[]).map((item: any) => (
 								<CardGroup id={item.id} title={item.title} />
@@ -44,7 +27,10 @@ export default function MainBoard() {
 					</Flex>
 				</ScrollArea>
 			</DragDropContext>
-			<Button onClick={onClick1}>Create project</Button>
+
+			<CreateProjectDialog onCreate={createProject}>
+				<Button>Create project</Button>
+			</CreateProjectDialog>
 		</>
 	);
 }
diff --git a/cool_todo_manager/src/components/dialogs/AddUserToProjectDialog/AddUserToProjectDialog.tsx b/cool_todo_manager/src/components/dialogs/AddUserToProjectDialog/AddUserToProjectDialog.tsx
new file mode 100644
index 0000000..65727f8
--- /dev/null
+++ b/cool_todo_manager/src/components/dialogs/AddUserToProjectDialog/AddUserToProjectDialog.tsx
@@ -0,0 +1,92 @@
+import { Button, Dialog, Flex, Select } from '@radix-ui/themes';
+import { PropsWithChildren, useState } from 'react';
+import {
+    useAddProjectMemberMutation,
+    useGetAllUsersQuery,
+} from '../../../services/mainApi';
+
+type TAddUserToProjectDialog = {
+	projectId: number;
+} & PropsWithChildren;
+
+export default function AddUserToProjectDialog(props: TAddUserToProjectDialog) {
+	const { projectId, children } = props;
+	const { data: users, isLoading, error, refetch } = useGetAllUsersQuery({});
+	const [addProjectMember, { isLoading: isAdding }] =
+		useAddProjectMemberMutation();
+	const [selectedUserId, setSelectedUserId] = useState<number | null>(null);
+
+	const handleAddUser = async () => {
+		if (selectedUserId) {
+			try {
+				await addProjectMember({
+					projectId,
+					memberId: selectedUserId,
+				}).unwrap();
+				setSelectedUserId(null);
+			} catch (err) {
+				console.error('Failed to add user:', err);
+			}
+		}
+	};
+
+
+	return (
+		<Dialog.Root onOpenChange={() => refetch()}>
+			<Dialog.Trigger>{children}</Dialog.Trigger>
+
+			<Dialog.Content maxWidth="450px">
+				<Dialog.Title>Add User to Project</Dialog.Title>
+
+				<Flex direction="column" gap="3" mt="4">
+					{isLoading ? (
+						<span>Loading users...</span>
+					) : error ? (
+						<span>Error loading users.</span>
+					) : (
+						<Select.Root
+							value={selectedUserId?.toString() || ''}
+							onValueChange={(value) =>
+								setSelectedUserId(Number(value))
+							}
+							required
+						>
+							<Select.Trigger aria-label="User">
+								{selectedUserId
+									? users?.find(
+											(user: any) =>
+												user.id === selectedUserId,
+									  )?.username
+									: 'Select a user'}
+							</Select.Trigger>
+							<Select.Content>
+								{users?.map((user: any) => (
+									<Select.Item key={user.id} value={user.id}>
+										{user.username}
+									</Select.Item>
+								))}
+							</Select.Content>
+						</Select.Root>
+					)}
+				</Flex>
+
+				<Flex gap="3" mt="4" justify="end">
+					<Dialog.Close>
+						<Button variant="soft" color="gray">
+							Cancel
+						</Button>
+					</Dialog.Close>
+					<Dialog.Close>
+						<Button
+							color="green"
+							onClick={handleAddUser}
+							disabled={!selectedUserId || isAdding}
+						>
+							{isAdding ? 'Adding...' : 'Add'}
+						</Button>
+					</Dialog.Close>
+				</Flex>
+			</Dialog.Content>
+		</Dialog.Root>
+	);
+}
diff --git a/cool_todo_manager/src/components/dialogs/CreateProjectDialog/CreateProjectDialog.tsx b/cool_todo_manager/src/components/dialogs/CreateProjectDialog/CreateProjectDialog.tsx
new file mode 100644
index 0000000..8d74bf8
--- /dev/null
+++ b/cool_todo_manager/src/components/dialogs/CreateProjectDialog/CreateProjectDialog.tsx
@@ -0,0 +1,59 @@
+import { Button, Dialog, Flex, TextArea, TextField } from '@radix-ui/themes';
+import { PropsWithChildren, useState } from 'react';
+
+type TCreateProjectDialog = {
+	onCreate: (f: any) => void;
+} & PropsWithChildren;
+
+export default function CreateProjectDialog(props: TCreateProjectDialog) {
+	const [title, setTitle] = useState('');
+	const [description, setDescription] = useState('');
+
+	const handleCreate = () => {
+		props.onCreate({title, description});
+		setTitle('');
+		setDescription('');
+	};
+
+	return (
+		<Dialog.Root>
+			<Dialog.Trigger>
+				{props.children}
+			</Dialog.Trigger>
+
+			<Dialog.Content maxWidth="450px">
+				<Dialog.Title>Create a New Project</Dialog.Title>
+
+				<Flex direction="column" gap="3" mt="4">
+					<TextField.Root
+						value={title}
+						onChange={(e) => setTitle(e.target.value)}
+						required
+					></TextField.Root>
+					<TextArea
+						value={description}
+						onChange={(e) => setDescription(e.target.value)}
+						placeholder="Optional description"
+					/>
+				</Flex>
+
+				<Flex gap="3" mt="4" justify="end">
+					<Dialog.Close>
+						<Button variant="soft" color="gray">
+							Cancel
+						</Button>
+					</Dialog.Close>
+					<Dialog.Close>
+						<Button
+							color="green"
+							onClick={handleCreate}
+							disabled={!title}
+						>
+							Create
+						</Button>
+					</Dialog.Close>
+				</Flex>
+			</Dialog.Content>
+		</Dialog.Root>
+	);
+}
diff --git a/cool_todo_manager/src/components/CardGroup/CreateTaskDialog/CreateTaskDialog.tsx b/cool_todo_manager/src/components/dialogs/CreateTaskDialog/CreateTaskDialog.tsx
similarity index 100%
rename from cool_todo_manager/src/components/CardGroup/CreateTaskDialog/CreateTaskDialog.tsx
rename to cool_todo_manager/src/components/dialogs/CreateTaskDialog/CreateTaskDialog.tsx
diff --git a/cool_todo_manager/src/components/CardGroup/DeleteProjectDialog/CreateTaskDialog.tsx b/cool_todo_manager/src/components/dialogs/DeleteProjectDialog/CreateTaskDialog.tsx
similarity index 100%
rename from cool_todo_manager/src/components/CardGroup/DeleteProjectDialog/CreateTaskDialog.tsx
rename to cool_todo_manager/src/components/dialogs/DeleteProjectDialog/CreateTaskDialog.tsx
diff --git a/cool_todo_manager/src/pages/auth/RegisterPage/RegisterPage.tsx b/cool_todo_manager/src/pages/auth/RegisterPage/RegisterPage.tsx
index 21168d0..a23a0fb 100644
--- a/cool_todo_manager/src/pages/auth/RegisterPage/RegisterPage.tsx
+++ b/cool_todo_manager/src/pages/auth/RegisterPage/RegisterPage.tsx
@@ -8,8 +8,33 @@ import {
 	TextField,
 } from '@radix-ui/themes';
 import { Form } from 'radix-ui';
+import { useState } from 'react';
+import { useRegisterMutation } from '../../../services/mainApi';
 
 export default function RegisterPage() {
+	const [register, { isLoading, error }] = useRegisterMutation();
+	const [formData, setFormData] = useState({
+		username: '',
+		email: '',
+		password: '',
+	});
+
+	const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+		setFormData({
+			...formData,
+			[e.target.name]: e.target.value,
+		});
+	};
+
+	const handleSubmit = async (e: React.FormEvent) => {
+		e.preventDefault();
+		try {
+			await register(formData).unwrap();
+		} catch (err) {
+			console.error('Failed to register:', err);
+		}
+	};
+
 	return (
 		<Card className="absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2 w-fit">
 			<Heading size="4" className="text-center !mb-2">
@@ -17,8 +42,27 @@ export default function RegisterPage() {
 			</Heading>
 			<Form.Root
 				className="flex flex-col gap-4"
-				onSubmit={(e) => e.preventDefault()}
+				onSubmit={handleSubmit}
 			>
+				<Form.Field name="username">
+					<Form.Message match="valueMissing">
+						<Text>Username is required</Text>
+					</Form.Message>
+
+					<Form.Control asChild>
+						<TextField.Root
+							type="text"
+							name="username"
+							placeholder="Username"
+							required
+							value={formData.username}
+							onChange={handleChange}
+						>
+							<TextField.Slot />
+						</TextField.Root>
+					</Form.Control>
+				</Form.Field>
+
 				<Form.Field name="email">
 					<Form.Message match="valueMissing">
 						<Text>Email is required</Text>
@@ -31,8 +75,11 @@ export default function RegisterPage() {
 					<Form.Control asChild>
 						<TextField.Root
 							type="email"
+							name="email"
 							placeholder="Email"
 							required
+							value={formData.email}
+							onChange={handleChange}
 						>
 							<TextField.Slot />
 						</TextField.Root>
@@ -49,16 +96,24 @@ export default function RegisterPage() {
 							type="password"
 							placeholder="Password"
 							required
+							value={formData.password}
+							onChange={handleChange}
 						>
 							<TextField.Slot />
 						</TextField.Root>
 					</Form.Control>
 				</Form.Field>
 
-				<Button onClick={(e) => e.preventDefault()} className="mt-4">
+				<Button type="submit" disabled={isLoading} className="mt-4">
 					Register
 				</Button>
 
+				{error && (
+					<Box className="text-red-500">
+						<Text>Error registering user.</Text>
+					</Box>
+				)}
+
 				<Box className="w-full !flex justify-center">
 					<Link href="/login">
 						<Text>Login</Text>
@@ -67,4 +122,4 @@ export default function RegisterPage() {
 			</Form.Root>
 		</Card>
 	);
-}
+}
\ No newline at end of file
diff --git a/cool_todo_manager/src/services/mainApi.ts b/cool_todo_manager/src/services/mainApi.ts
index 3dbcdb8..ddf181c 100644
--- a/cool_todo_manager/src/services/mainApi.ts
+++ b/cool_todo_manager/src/services/mainApi.ts
@@ -3,7 +3,7 @@ import { createApi, fetchBaseQuery } from '@reduxjs/toolkit/query/react';
 export const mainApi = createApi({
 	reducerPath: 'api',
 	baseQuery: fetchBaseQuery({
-		baseUrl: 'http://109.107.166.17:3000/api/',
+		baseUrl: 'http://109.107.166.17:5000/api/',
 		prepareHeaders: (headers) => {
 			headers.set(
 				'Authorization',
@@ -12,7 +12,7 @@ export const mainApi = createApi({
 			return headers;
 		},
 	}),
-	tagTypes: ['Task', 'Project'],
+	tagTypes: ['Task', 'Project', 'ProjectMembers'],
 	endpoints: (builder) => ({
 		getTasks: builder.query<string[], void>({
 			query: () => ({
@@ -57,7 +57,7 @@ export const mainApi = createApi({
 			query: (task) => ({
 				url: `tasks/${task.id}`,
 				method: 'PATCH',
-				body: {status: task.status},
+				body: { status: task.status },
 			}),
 			invalidatesTags: (result, error, id) => [{ type: 'Task', id }],
 		}),
@@ -88,7 +88,7 @@ export const mainApi = createApi({
 		}),
 		getProjects: builder.query({
 			query: () => ({
-				url: 'projects',
+				url: 'projects/my',
 				method: 'GET',
 			}),
 			providesTags: (result, error, id) => [
@@ -115,7 +115,40 @@ export const mainApi = createApi({
 				url: `projects/${id}`,
 				method: 'DELETE',
 			}),
-			invalidatesTags: (result, error, id) => [{ type: 'Project', id }],
+			invalidatesTags: (result, error, id) => [
+				{ type: 'Project', id: 'LIST' },
+			],
+		}),
+
+		// PROJECT MEMBERS
+		addProjectMember: builder.mutation({
+			query: ({ projectId, memberId }) => ({
+				url: `projects/${projectId}/members/add`,
+				method: 'POST',
+				body: { userId: memberId, role: '' },
+			}),
+			invalidatesTags: (result, error, args) => [
+				{ type: 'ProjectMembers', id: 'LIST' },
+			],
+		}),
+		getProjectMembers: builder.query({
+			query: (id) => ({
+				url: `projects/${id}/members`,
+				method: 'GET',
+			}),
+			providesTags: (result, error, args) => [
+				{ type: 'ProjectMembers', id: 'LIST' },
+			],
+		}),
+		removeProjectMember: builder.mutation({
+			query: ({ projectId, memberId }) => ({
+				url: `projects/${projectId}/members/remove`,
+				method: 'DELETE',
+				body: { userId: memberId },
+			}),
+			invalidatesTags: (result, error, id) => [
+				{ type: 'ProjectMembers', id: 'LIST' },
+			],
 		}),
 	}),
 });
@@ -123,39 +156,76 @@ export const mainApi = createApi({
 export const authApi = createApi({
 	reducerPath: 'authApi',
 	baseQuery: fetchBaseQuery({
-		baseUrl: 'http://109.107.166.17:3000/api/auth/',
-
+		baseUrl: 'http://109.107.166.17:4000/api/',
 	}),
 	endpoints: (builder) => ({
 		login: builder.mutation({
 			query: (credentials) => ({
-				url: 'login',
+				url: '/auth/login',
 				method: 'POST',
 				body: credentials,
 			}),
 			async onQueryStarted(arg, { queryFulfilled }) {
 				try {
 					const response = await queryFulfilled;
-					if (response.data) {
+					if (response.data.access_token) {
 						localStorage.setItem(
 							'token',
 							response.data.access_token,
 						);
-						window.location.href = '/';
+						if (response.meta?.response?.status === 201)
+							window.location.href = '/';
 					}
 				} catch (error) {}
 			},
 		}),
-        register: builder.mutation({
-            query: (credentials) => ({
-                url: 'register',
-                method: 'POST',
-                body: credentials,
-            }),
-        }),
+		register: builder.mutation({
+			query: (credentials) => ({
+				url: '/auth/register',
+				method: 'POST',
+				body: credentials,
+			}),
+			onQueryStarted: async (arg, { queryFulfilled }) => {
+				try {
+					const response = await queryFulfilled;
+					if (response.meta?.response?.status === 201)
+						window.location.href = '/login';
+				} catch (error) {}
+			},
+		}),
+
+		// USERS
+		getAllUsers: builder.query({
+			query: () => ({
+				url: '/users',
+				method: 'GET',
+			}),
+			keepUnusedDataFor: 0,
+			
+		}),
 	}),
 });
 
-export const { useLoginMutation, useRegisterMutation } = authApi;
-export const { useGetTasksQuery, useCreateTaskMutation, useUpdateTaskMutation, useDeleteTaskMutation, useGetTasksForGroupQuery } = mainApi;
-export const { useGetProjectsQuery, useCreateProjectMutation, useUpdateProjectMutation, useDeleteProjectMutation } = mainApi;
+export const { useLoginMutation, useRegisterMutation, useGetAllUsersQuery } =
+	authApi;
+
+export const {
+	useGetTasksQuery,
+	useCreateTaskMutation,
+	useUpdateTaskMutation,
+	useDeleteTaskMutation,
+	useGetTasksForGroupQuery,
+} = mainApi;
+
+export const {
+	useGetProjectsQuery,
+	useCreateProjectMutation,
+	useUpdateProjectMutation,
+	useDeleteProjectMutation,
+} = mainApi;
+
+export const {
+	useRemoveProjectMemberMutation,
+	useAddProjectMemberMutation,
+	useGetProjectMembersQuery,
+} = mainApi;