diff --git a/app/channel.go b/app/channel.go
index 64d322af59..53cfd3d8ec 100644
--- a/app/channel.go
+++ b/app/channel.go
@@ -64,6 +64,43 @@ func (s *channelsWrapper) UpdateChannelSidebarCategories(userID, teamID string,
 	return s.app.UpdateSidebarCategories(request.EmptyContext(s.srv.Log()), userID, teamID, categories)
 }
 
+func (s *channelsWrapper) CreateChannel(channel *model.Channel) (*model.Channel, *model.AppError) {
+	return s.app.CreateChannel(request.EmptyContext(s.srv.Log()), channel, false)
+}
+
+func (s *channelsWrapper) AddUserToChannel(channelID, userID, asUserID string) (*model.ChannelMember, *model.AppError) {
+	ctx := request.EmptyContext(s.srv.Log())
+	channel, err := s.app.GetChannel(ctx, channelID)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.app.AddChannelMember(ctx, userID, channel, ChannelMemberOpts{
+		UserRequestorID: asUserID,
+	})
+}
+
+func (s *channelsWrapper) UpdateChannelMemberRoles(channelID, userID, newRoles string) (*model.ChannelMember, *model.AppError) {
+	return s.app.UpdateChannelMemberRoles(request.EmptyContext(s.srv.Log()), channelID, userID, newRoles)
+}
+
+func (s *channelsWrapper) DeleteChannelMember(channelID, userID string) *model.AppError {
+	return s.app.LeaveChannel(request.EmptyContext(s.srv.Log()), channelID, userID)
+}
+
+func (s *channelsWrapper) AddChannelMember(channelID, userID string) (*model.ChannelMember, *model.AppError) {
+	channel, err := s.GetChannelByID(channelID)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.app.AddChannelMember(request.EmptyContext(s.srv.Log()), userID, channel, ChannelMemberOpts{
+		// For now, don't allow overriding these via the plugin API.
+		UserRequestorID: "",
+		PostRootID:      "",
+	})
+}
+
 // Ensure the wrapper implements the product service.
 var _ product.ChannelService = (*channelsWrapper)(nil)
 
diff --git a/app/permissions.go b/app/permissions.go
index 2b34b85bb3..251dc4722d 100644
--- a/app/permissions.go
+++ b/app/permissions.go
@@ -41,6 +41,10 @@ func (s *permissionsServiceWrapper) HasPermissionToChannel(askingUserID string,
 	return s.app.HasPermissionToChannel(request.EmptyContext(s.app.Log()), askingUserID, channelID, permission)
 }
 
+func (s *permissionsServiceWrapper) RolesGrantPermission(roleNames []string, permissionId string) bool {
+	return s.app.RolesGrantPermission(roleNames, permissionId)
+}
+
 func (a *App) ResetPermissionsSystem() *model.AppError {
 	// Reset all Teams to not have a scheme.
 	if err := a.Srv().Store().Team().ResetAllTeamSchemes(); err != nil {
diff --git a/app/post.go b/app/post.go
index 14a9dbe47f..759bb3c4a2 100644
--- a/app/post.go
+++ b/app/post.go
@@ -54,6 +54,18 @@ func (s *postServiceWrapper) SendEphemeralPost(ctx *request.Context, userID stri
 	return s.app.SendEphemeralPost(ctx, userID, post)
 }
 
+func (s *postServiceWrapper) GetPost(postID string) (*model.Post, *model.AppError) {
+	return s.app.GetSinglePost(postID, false)
+}
+
+func (s *postServiceWrapper) DeletePost(ctx *request.Context, postID, productID string) (*model.Post, *model.AppError) {
+	return s.app.DeletePost(ctx, postID, productID)
+}
+
+func (s *postServiceWrapper) UpdatePost(ctx *request.Context, post *model.Post, safeUpdate bool) (*model.Post, *model.AppError) {
+	return s.app.UpdatePost(ctx, post, false)
+}
+
 func (a *App) CreatePostAsUser(c request.CTX, post *model.Post, currentSessionId string, setOnline bool) (*model.Post, *model.AppError) {
 	// Check that channel has not been deleted
 	channel, errCh := a.Srv().Store().Channel().Get(post.ChannelId, true)
diff --git a/app/team.go b/app/team.go
index 222d10e442..12d9af0e91 100644
--- a/app/team.go
+++ b/app/team.go
@@ -44,6 +44,19 @@ func (w *teamServiceWrapper) CreateMember(ctx *request.Context, teamID, userID s
 	return w.app.AddTeamMember(ctx, teamID, userID)
 }
 
+func (w *teamServiceWrapper) GetGroup(groupID string) (*model.Group, *model.AppError) {
+	return w.app.GetGroup(groupID, nil, nil)
+}
+
+func (w *teamServiceWrapper) GetTeam(teamID string) (*model.Team, *model.AppError) {
+	return w.app.GetTeam(teamID)
+}
+
+func (w *teamServiceWrapper) GetGroupMemberUsers(groupID string, page, perPage int) ([]*model.User, *model.AppError) {
+	users, _, err := w.app.GetGroupMemberUsersPage(groupID, page, perPage, nil)
+	return users, err
+}
+
 // Ensure the wrapper implements the product service.
 var _ product.TeamService = (*teamServiceWrapper)(nil)
 
diff --git a/product/api.go b/product/api.go
index 3012608bcb..764ca82fdf 100644
--- a/product/api.go
+++ b/product/api.go
@@ -33,6 +33,9 @@ type PostService interface {
 	CreatePost(context *request.Context, post *model.Post) (*model.Post, *model.AppError)
 	GetPostsByIds(postIDs []string) ([]*model.Post, int64, *model.AppError)
 	SendEphemeralPost(ctx *request.Context, userID string, post *model.Post) *model.Post
+	GetPost(postID string) (*model.Post, *model.AppError)
+	DeletePost(ctx *request.Context, postID, productID string) (*model.Post, *model.AppError)
+	UpdatePost(c *request.Context, post *model.Post, safeUpdate bool) (*model.Post, *model.AppError)
 }
 
 // PermissionService provides permissions related utilities. For now, the service implementation
@@ -44,6 +47,7 @@ type PermissionService interface {
 	HasPermissionTo(userID string, permission *model.Permission) bool
 	HasPermissionToTeam(userID, teamID string, permission *model.Permission) bool
 	HasPermissionToChannel(askingUserID string, channelID string, permission *model.Permission) bool
+	RolesGrantPermission(roleNames []string, permissionID string) bool
 }
 
 // ClusterService enables to publish cluster events. In addition to that, It's being used for
@@ -69,6 +73,11 @@ type ChannelService interface {
 	GetChannelMembers(channelID string, page, perPage int) (model.ChannelMembers, *model.AppError)
 	CreateChannelSidebarCategory(userID, teamID string, newCategory *model.SidebarCategoryWithChannels) (*model.SidebarCategoryWithChannels, *model.AppError)
 	UpdateChannelSidebarCategories(userID, teamID string, categories []*model.SidebarCategoryWithChannels) ([]*model.SidebarCategoryWithChannels, *model.AppError)
+	CreateChannel(channel *model.Channel) (*model.Channel, *model.AppError)
+	AddUserToChannel(channelID, userID, asUserID string) (*model.ChannelMember, *model.AppError)
+	UpdateChannelMemberRoles(channelID, userID, newRoles string) (*model.ChannelMember, *model.AppError)
+	DeleteChannelMember(channelID, userID string) *model.AppError
+	AddChannelMember(channelID, userID string) (*model.ChannelMember, *model.AppError)
 }
 
 // LicenseService provides license related utilities.
@@ -99,6 +108,9 @@ type UserService interface {
 type TeamService interface {
 	GetMember(teamID, userID string) (*model.TeamMember, *model.AppError)
 	CreateMember(ctx *request.Context, teamID, userID string) (*model.TeamMember, *model.AppError)
+	GetGroup(groupId string) (*model.Group, *model.AppError)
+	GetTeam(teamID string) (*model.Team, *model.AppError)
+	GetGroupMemberUsers(groupID string, page, perPage int) ([]*model.User, *model.AppError)
 }
 
 // BotService is just a copy implementation of mattermost-plugin-api EnsureBot method.