diff --git a/app/definitions/rest/v1/channels.ts b/app/definitions/rest/v1/channels.ts
index d5270e0bc..640ade486 100644
--- a/app/definitions/rest/v1/channels.ts
+++ b/app/definitions/rest/v1/channels.ts
@@ -1,6 +1,6 @@
 import { ITeam } from '../../ITeam';
 import type { IMessage, IMessageFromServer } from '../../IMessage';
-import type { IRoom } from '../../IRoom';
+import type { IRoom, IServerRoomItem } from '../../IRoom';
 import type { IUser } from '../../IUser';
 
 export type ChannelsEndpoints = {
@@ -29,6 +29,20 @@ export type ChannelsEndpoints = {
 			messages: IMessageFromServer[];
 		};
 	};
+	'channels.create': {
+		POST: (params: {
+			name: string;
+			members: string[];
+			readOnly: boolean;
+			extraData: {
+				broadcast: boolean;
+				encrypted: boolean;
+				teamId?: string;
+			};
+		}) => {
+			group: Partial<IServerRoomItem>;
+		};
+	};
 	'channels.convertToTeam': {
 		POST: (params: { channelId: string; channelName: string }) => { team: ITeam };
 	};
diff --git a/app/definitions/rest/v1/groups.ts b/app/definitions/rest/v1/groups.ts
index d858d79d5..8868ac7de 100644
--- a/app/definitions/rest/v1/groups.ts
+++ b/app/definitions/rest/v1/groups.ts
@@ -1,6 +1,6 @@
 import { ITeam } from '../../ITeam';
 import type { IMessage, IMessageFromServer } from '../../IMessage';
-import type { IRoom } from '../../IRoom';
+import type { IRoom, IServerRoomItem } from '../../IRoom';
 import type { IUser } from '../../IUser';
 
 export type GroupsEndpoints = {
@@ -23,6 +23,20 @@ export type GroupsEndpoints = {
 			messages: IMessageFromServer[];
 		};
 	};
+	'groups.create': {
+		POST: (params: {
+			name: string;
+			members: string[];
+			readOnly: boolean;
+			extraData: {
+				broadcast: boolean;
+				encrypted: boolean;
+				teamId?: string;
+			};
+		}) => {
+			group: Partial<IServerRoomItem>;
+		};
+	};
 	'groups.convertToTeam': {
 		POST: (params: { roomId: string; roomName: string }) => { team: ITeam };
 	};
diff --git a/app/definitions/rest/v1/omnichannel.ts b/app/definitions/rest/v1/omnichannel.ts
index df4441370..3a7d6bcec 100644
--- a/app/definitions/rest/v1/omnichannel.ts
+++ b/app/definitions/rest/v1/omnichannel.ts
@@ -76,6 +76,9 @@ export type OmnichannelEndpoints = {
 		GET: (params: { sort: string }) => PaginatedResult<{ agents: ILivechatDepartmentAgents[] }>;
 		POST: (params: { upsert: string[]; remove: string[] }) => void;
 	};
+	'livechat/department/:departmentId/?includeAgents=false': {
+		GET: () => PaginatedResult<{ department: ILivechatDepartment[] }>;
+	};
 	'livechat/departments.available-by-unit/:id': {
 		GET: (params: PaginatedRequest<{ text: string }>) => PaginatedResult<{
 			departments: ILivechatDepartment[];
diff --git a/app/lib/rocketchat/services/restApi.ts b/app/lib/rocketchat/services/restApi.ts
index fa2fb91b8..a3f148f0a 100644
--- a/app/lib/rocketchat/services/restApi.ts
+++ b/app/lib/rocketchat/services/restApi.ts
@@ -19,7 +19,7 @@ export const createChannel = ({
 	broadcast: boolean;
 	encrypted: boolean;
 	teamId: string;
-}): any => {
+}) => {
 	const params = {
 		name,
 		members: users,
@@ -30,8 +30,6 @@ export const createChannel = ({
 			...(teamId && { teamId })
 		}
 	};
-	// TODO: missing definitions from server
-	// @ts-ignore
 	return sdk.post(type ? 'groups.create' : 'channels.create', params);
 };
 
@@ -83,7 +81,8 @@ export const forgotPassword = (email: string): any =>
 	// @ts-ignore
 	sdk.post('users.forgotPassword', { email });
 
-export const sendConfirmationEmail = (email: string) => sdk.methodCallWrapper('sendConfirmationEmail', email);
+export const sendConfirmationEmail = (email: string): Promise<{ message: string; success: boolean }> =>
+	sdk.methodCallWrapper('sendConfirmationEmail', email);
 
 export const spotlight = (search: string, usernames: string, type: { users: boolean; rooms: boolean }) =>
 	// RC 0.51.0
@@ -406,7 +405,7 @@ export const forwardLivechat = (transferData: any) =>
 	// RC 0.36.0
 	sdk.methodCallWrapper('livechat:transfer', transferData);
 
-export const getDepartmentInfo = (departmentId: string): any =>
+export const getDepartmentInfo = (departmentId: string) =>
 	// RC 2.2.0
 	sdk.get(`livechat/department/${departmentId}?includeAgents=false`);
 
@@ -427,7 +426,15 @@ export const usersAutoComplete = (selector: any) =>
 	// RC 2.4.0
 	sdk.get('users.autocomplete', { selector });
 
-export const getRoutingConfig = () =>
+export const getRoutingConfig = (): Promise<{
+	previewRoom: boolean;
+	showConnecting: boolean;
+	showQueue: boolean;
+	showQueueLink: boolean;
+	returnQueue: boolean;
+	enableTriggerAction: boolean;
+	autoAssignAgent: boolean;
+}> =>
 	// RC 2.0.0
 	sdk.methodCallWrapper('livechat:getRoutingConfig');
 
diff --git a/app/views/RoomActionsView/index.tsx b/app/views/RoomActionsView/index.tsx
index eda478605..7be3ae706 100644
--- a/app/views/RoomActionsView/index.tsx
+++ b/app/views/RoomActionsView/index.tsx
@@ -347,7 +347,7 @@ class RoomActionsView extends React.Component<IRoomActionsViewProps, IRoomAction
 			const { returnQueue } = await RocketChat.getRoutingConfig();
 			return returnQueue;
 		} catch {
-			// do nothing
+			return false;
 		}
 	};