diff --git a/BeReadyBackend/BeReadyBackend.csproj b/BeReadyBackend/BeReadyBackend.csproj
index 61caa40..90499a8 100644
--- a/BeReadyBackend/BeReadyBackend.csproj
+++ b/BeReadyBackend/BeReadyBackend.csproj
@@ -27,7 +27,6 @@
     </ItemGroup>
 
     <ItemGroup>
-      <Folder Include="DTO\Groups\" />
       <Folder Include="DTO\Messages\" />
       <Folder Include="DTO\RandomChallenges\" />
     </ItemGroup>
diff --git a/BeReadyBackend/DTO/Groups/CreateGroupDto.cs b/BeReadyBackend/DTO/Groups/CreateGroupDto.cs
new file mode 100644
index 0000000..1730c64
--- /dev/null
+++ b/BeReadyBackend/DTO/Groups/CreateGroupDto.cs
@@ -0,0 +1,10 @@
+namespace BeReadyBackend.DTO.Groups;
+
+public class CreateGroupDto
+{
+    public string? Label { get; set; }
+    public string? Title { get; set; }
+    public string? Description { get; set; }
+    public int Duration { get; set; }
+    public List<CreateUserGroupDto>? UserGroups { get; set; }
+}
\ No newline at end of file
diff --git a/BeReadyBackend/DTO/Groups/CreateUserGroupDto.cs b/BeReadyBackend/DTO/Groups/CreateUserGroupDto.cs
new file mode 100644
index 0000000..094826a
--- /dev/null
+++ b/BeReadyBackend/DTO/Groups/CreateUserGroupDto.cs
@@ -0,0 +1,6 @@
+namespace BeReadyBackend.DTO.Groups;
+
+public class CreateUserGroupDto
+{
+    public int UserId { get; set; }
+}
\ No newline at end of file
diff --git a/BeReadyBackend/DTO/Groups/GetUserGroupDto.cs b/BeReadyBackend/DTO/Groups/GetUserGroupDto.cs
new file mode 100644
index 0000000..61a9705
--- /dev/null
+++ b/BeReadyBackend/DTO/Groups/GetUserGroupDto.cs
@@ -0,0 +1,9 @@
+namespace BeReadyBackend.DTO.Groups;
+
+public class GetUserGroupDto
+{
+    public int Id { get; set; }
+    public string? Username { get; set; }
+    public string? Grade { get; set; }
+    public int Score { get; set; }
+}
\ No newline at end of file
diff --git a/BeReadyBackend/Endpoints/Groups/CreateGroupEndpoint.cs b/BeReadyBackend/Endpoints/Groups/CreateGroupEndpoint.cs
new file mode 100644
index 0000000..e77bb6d
--- /dev/null
+++ b/BeReadyBackend/Endpoints/Groups/CreateGroupEndpoint.cs
@@ -0,0 +1,65 @@
+using BeReadyBackend.DTO.Groups;
+using BeReadyBackend.Models;
+using BeReadyBackend.Repositories;
+using BeReadyBackend.Services;
+using BeReadyBackend.Specifications.Users;
+using FastEndpoints;
+using Group = BeReadyBackend.Models.Group;
+
+namespace BeReadyBackend.Endpoints.Groups;
+
+public class CreateGroupEndpoint(
+    UserGroupsRepository userGroupsRepository,
+    GroupsRepository groupsRepository,
+    UsersRepository usersRepository,
+    UserService userService,
+    AutoMapper.IMapper mapper) : Endpoint<CreateGroupDto>
+{
+    public override void Configure()
+    {
+        Post("/Groups/");
+    }
+
+    public override async Task HandleAsync(CreateGroupDto req, CancellationToken ct)
+    {
+        int userId = userService.GetUserIdFromToken();
+
+        Group? group = new();
+        mapper.Map(req, group);
+        group.IsFinished = false;
+        group.CreationDate = DateTime.Now;
+        group.UserGroups = [];
+        
+        await groupsRepository.AddAsync(group, ct);
+        await groupsRepository.SaveChangesAsync(ct);
+
+        UserGroup userGroup;
+        foreach (CreateUserGroupDto user in req.UserGroups!)
+        {
+            User? userChecking = await usersRepository.SingleOrDefaultAsync(new GetUserByIdSpec(user.UserId), ct);
+            if (userChecking is null) continue;
+            userGroup = new UserGroup
+            {
+                UserId = user.UserId,
+                GroupId = group.Id,
+                Grade = "Member",
+                Score = 0
+            };
+            group.UserGroups?.Add(userGroup);
+        }
+
+        userGroup = new UserGroup
+        {
+            UserId = userId,
+            GroupId = group.Id,
+            Grade = "Admin",
+            Score = 0
+        };
+        group.UserGroups?.Add(userGroup);
+        
+        await userGroupsRepository.AddRangeAsync(group.UserGroups!, ct);
+        await userGroupsRepository.SaveChangesAsync(ct);
+
+        await Send.OkAsync(ct);
+    }
+}
\ No newline at end of file
diff --git a/BeReadyBackend/Endpoints/Groups/DeleteGroupEndpoint.cs b/BeReadyBackend/Endpoints/Groups/DeleteGroupEndpoint.cs
new file mode 100644
index 0000000..941e411
--- /dev/null
+++ b/BeReadyBackend/Endpoints/Groups/DeleteGroupEndpoint.cs
@@ -0,0 +1,49 @@
+using BeReadyBackend.Models;
+using BeReadyBackend.Repositories;
+using BeReadyBackend.Services;
+using BeReadyBackend.Specifications.Groups;
+using BeReadyBackend.Specifications.Users;
+using FastEndpoints;
+using Group = BeReadyBackend.Models.Group;
+
+namespace BeReadyBackend.Endpoints.Groups;
+
+public class GroupDeletedRequest
+{
+    public int Id { get; set; }
+}
+
+public class DeleteGroupEndpoint(GroupsRepository groupsRepository, UserGroupsRepository userGroupsRepository, UserService userService) : Endpoint<GroupDeletedRequest>
+{
+    public override void Configure()
+    {
+        Delete("/Groups/{@Id}", x => new { x.Id });
+    }
+
+    public override async Task HandleAsync(GroupDeletedRequest req, CancellationToken ct)
+    {
+        int userId = userService.GetUserIdFromToken();
+        Group? group = await groupsRepository.SingleOrDefaultAsync(new GetGroupByIdSpec(req.Id), ct);
+
+        if (group is null)
+        {
+            await Send.NotFoundAsync(ct);
+            return;
+        }
+
+        bool isAdmin = group.UserGroups?.Any(x => x.UserId == userId && x.Grade == "Admin") ?? false;
+
+        if (!isAdmin)
+        {
+            await Send.StringAsync("Vous n'avez pas les droits pour supprimer ce groupe", 400, cancellation: ct);
+            return;
+        }
+
+        if (group.UserGroups?.Count > 0)
+            await userGroupsRepository.DeleteRangeAsync(group.UserGroups, ct);
+        
+        await groupsRepository.DeleteAsync(group, ct);
+        await userGroupsRepository.SaveChangesAsync(ct);
+        await Send.OkAsync(ct);
+    }
+}
\ No newline at end of file
diff --git a/BeReadyBackend/Endpoints/Groups/GetAllGroupUsersEndpoint.cs b/BeReadyBackend/Endpoints/Groups/GetAllGroupUsersEndpoint.cs
new file mode 100644
index 0000000..0d8c731
--- /dev/null
+++ b/BeReadyBackend/Endpoints/Groups/GetAllGroupUsersEndpoint.cs
@@ -0,0 +1,28 @@
+using BeReadyBackend.DTO.Groups;
+using BeReadyBackend.Repositories;
+using BeReadyBackend.Services;
+using BeReadyBackend.Specifications.Groups;
+using FastEndpoints;
+
+namespace BeReadyBackend.Endpoints.Groups;
+
+public class UserGroupRequest
+{
+    public int Id { get; set; }
+}
+
+public class GetAllGroupUsersEndpoint(UserGroupsRepository userGroupsRepository, UserService userService) : Endpoint<UserGroupRequest, List<GetUserGroupDto>>
+{
+    public override void Configure()
+    {
+        Get("/Groups/{@Id}/Users/", x => new { x.Id });
+    }
+
+    public override async Task HandleAsync(UserGroupRequest req, CancellationToken ct)
+    {
+        int userId = userService.GetUserIdFromToken();
+
+        List<GetUserGroupDto> usersGroup = await userGroupsRepository.ProjectToListAsync<GetUserGroupDto>(new GetUserGroupByIdSpec(req.Id, userId), ct);
+        await Send.OkAsync(usersGroup, ct);
+    }
+}
\ No newline at end of file
diff --git a/BeReadyBackend/MappingProfiles/DtoToEntityMappings.cs b/BeReadyBackend/MappingProfiles/DtoToEntityMappings.cs
index 0f3ed9a..dcaca0f 100644
--- a/BeReadyBackend/MappingProfiles/DtoToEntityMappings.cs
+++ b/BeReadyBackend/MappingProfiles/DtoToEntityMappings.cs
@@ -1,5 +1,6 @@
 using AutoMapper;
 using BeReadyBackend.DTO.Achievements;
+using BeReadyBackend.DTO.Groups;
 using BeReadyBackend.DTO.Users;
 using BeReadyBackend.Models;
 
@@ -14,5 +15,8 @@ public class DtoToEntityMappings : Profile
         CreateMap<CreateUserDto, User>();
         CreateMap<UpdateUserDto, User>();
         CreateMap<PatchUserDesignationDto, User>();
+        
+        CreateMap<CreateGroupDto,  Group>()
+            .ForMember(dest => dest.UserGroups, opt => opt.Ignore());;
     }
 }
\ No newline at end of file
diff --git a/BeReadyBackend/MappingProfiles/EntityToDtoMappings.cs b/BeReadyBackend/MappingProfiles/EntityToDtoMappings.cs
index 26feab1..5b74d83 100644
--- a/BeReadyBackend/MappingProfiles/EntityToDtoMappings.cs
+++ b/BeReadyBackend/MappingProfiles/EntityToDtoMappings.cs
@@ -1,8 +1,10 @@
 using AutoMapper;
 using BeReadyBackend.DTO.Achievements;
 using BeReadyBackend.DTO.Friends;
+using BeReadyBackend.DTO.Groups;
 using BeReadyBackend.DTO.Users;
 using BeReadyBackend.Models;
+using NSwag.Generation.Processors;
 
 namespace BeReadyBackend.MappingProfiles;
 
@@ -44,5 +46,10 @@ public class EntityToDtoMappings : Profile
         CreateMap<UserFriend, GetFriendRequestDto>()
             .ForMember(dest => dest.Username, opt => opt.MapFrom(src => src.User!.Username))
             .ForMember(dest => dest.Score, opt => opt.MapFrom(src => src.User!.Score));
+
+        CreateMap<UserGroup, GetUserGroupDto>()
+            .ForMember(dest => dest.Id, opt => opt.MapFrom(src => src.UserId))
+            .ForMember(dest => dest.Username, opt => opt.MapFrom(src => src.User!.Username))
+            .ForMember(dest => dest.Score, opt => opt.MapFrom(src => src.User!.Score));
     }
 }
\ No newline at end of file
diff --git a/BeReadyBackend/Specifications/Groups/GetGroupByIdSpec.cs b/BeReadyBackend/Specifications/Groups/GetGroupByIdSpec.cs
new file mode 100644
index 0000000..12851ab
--- /dev/null
+++ b/BeReadyBackend/Specifications/Groups/GetGroupByIdSpec.cs
@@ -0,0 +1,14 @@
+using Ardalis.Specification;
+using BeReadyBackend.Models;
+
+namespace BeReadyBackend.Specifications.Groups;
+
+public class GetGroupByIdSpec : SingleResultSpecification<Group>
+{
+    public GetGroupByIdSpec(int groupId)
+    {
+        Query
+            .Include(x => x.UserGroups)
+            .Where(x => x.Id == groupId);
+    }
+}
\ No newline at end of file
diff --git a/BeReadyBackend/Specifications/Groups/GetUserGroupByIdSpec.cs b/BeReadyBackend/Specifications/Groups/GetUserGroupByIdSpec.cs
new file mode 100644
index 0000000..f9d9c4d
--- /dev/null
+++ b/BeReadyBackend/Specifications/Groups/GetUserGroupByIdSpec.cs
@@ -0,0 +1,14 @@
+using Ardalis.Specification;
+using BeReadyBackend.Models;
+
+namespace BeReadyBackend.Specifications.Groups;
+
+public class GetUserGroupByIdSpec : Specification<UserGroup>
+{
+    public GetUserGroupByIdSpec(int groupId, int userId)
+    {
+        Query
+            .Include(x => x.User!)
+            .Where(x => x.GroupId == groupId && x.Group!.UserGroups!.Any(y => y.UserId == userId));
+    }
+}
\ No newline at end of file