diff --git a/README.md b/README.md
index 4be845f..bb898b6 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,12 @@ Currently supported methods:
  - [Get Contact by Username](#get-contact-by-username)
  - [Send Message to Contact](#send-message-to-contact)
  - [Send Media to Contact](#send-media-to-contact)
- - [Get Messages History for a Contact](#get-messages-history)
+ - [Get Messages History](#get-messages-history)
+ - [Get UserFull](#get-userfull)
+ - [Create Chat](#create-chat)
+ - [Add Chat user](#add-chat-user)
+ - [Delete Chat user](#delete-chat-user)
+ - [Leave Chat](#leave-chat)
 
 ####IsPhoneRegistered
 Check if phone number registered to Telegram.
@@ -179,7 +184,7 @@ var hist = await client.GetMessagesHistoryForContact(userId, offset, limit);
 
 **Returns**: **List\<Message\>**, message history
 
-####Get UserFull Request
+####Get UserFull
 Returns user's full information for specified userId.
 
 _Example_:
@@ -192,6 +197,61 @@ var userFull = await client.GetUserFull(userId);
 
 **Returns**: **UserFull**, User's information
 
+####Create Chat
+Creates a new chat.
+
+_Example_:
+
+```
+var statedMessage = await client.CreateChat(title, new List<string> { userId1, userId2 });
+``` 
+
+* title - **string**, chat name
+* userIdsToInvite - **List<int>**, list of userIds to invite to chat. Current user will be automatically added to this chat.
+
+**Returns**: **Messages_statedMessageConstructor**, Message that contains information about created chat.
+
+####Add Chat user
+Adds a user to a chat and sends a service message on it.
+
+_Example_:
+
+```
+var statedMessage = await client.AddChatUser(chatId, userId);
+``` 
+
+* chatId - **int**, Chat ID
+* userId - **int**, User ID to be added
+
+**Returns**: **Messages_statedMessageConstructor**, Message that contains information about modified chat.
+
+####Delete Chat user
+Deletes a user from a chat and sends a service message on it.
+
+_Example_:
+
+```
+var statedMessage = await client.DeleteChatUser(chatId, userId);
+``` 
+
+* chatId - **int**, Chat ID
+* userId - **int**, User ID to be deleted
+
+**Returns**: **Messages_statedMessageConstructor**, Message that contains information about modified chat.
+
+####Leave Chat
+Leaves the chat by deleting currently authenticated user from it.
+
+_Example_:
+
+```
+var statedMessage = await client.LeaveChat(chatId);
+``` 
+
+* chatId - **int**, Chat ID
+
+**Returns**: **Messages_statedMessageConstructor**, Message that contains information about modified chat.
+
 ## Contributing
 
 Contributing is highly appreciated!
diff --git a/TLSharp.Core/TLSharp.Core.csproj b/TLSharp.Core/TLSharp.Core.csproj
index 66a2d8f..f52c911 100644
--- a/TLSharp.Core/TLSharp.Core.csproj
+++ b/TLSharp.Core/TLSharp.Core.csproj
@@ -90,8 +90,8 @@
   <ItemGroup>
     <None Include="packages.config" />
     <Compile Include="Requests\CreateChatRequest.cs" />
-    <None Include="Requests\AddChatUserRequest.cs" />
-    <None Include="Requests\DeleteChatUserRequest.cs" />
+    <Compile Include="Requests\AddChatUserRequest.cs" />
+    <Compile Include="Requests\DeleteChatUserRequest.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/TLSharp.Core/TelegramClient.cs b/TLSharp.Core/TelegramClient.cs
index fab29ed..7d02a9a 100644
--- a/TLSharp.Core/TelegramClient.cs
+++ b/TLSharp.Core/TelegramClient.cs
@@ -294,7 +294,7 @@ namespace TLSharp.Core
             };
         }
 
-        public async Task<ChatConstructor> CreateChat(string title, List<string> userPhonesToInvite)
+        public async Task<Messages_statedMessageConstructor> CreateChat(string title, List<string> userPhonesToInvite)
         {
             var userIdsToInvite = new List<int>();
             foreach (var userPhone in userPhonesToInvite)
@@ -309,18 +309,39 @@ namespace TLSharp.Core
             return await CreateChat(title, userIdsToInvite);
         }
 
-        public async Task<ChatConstructor> CreateChat(string title, List<int> userIdsToInvite)
+        public async Task<Messages_statedMessageConstructor> CreateChat(string title, List<int> userIdsToInvite)
         {
             var request = new CreateChatRequest(userIdsToInvite.Select(uid => new InputUserContactConstructor(uid)).ToList(), title);
 
             await _sender.Send(request);
             await _sender.Receive(request);
 
-            var serviceMessage = request.message.message as MessageServiceConstructor;
-            var peerChat = serviceMessage.to_id as PeerChatConstructor;
+            return request.message;
+        }
+        
+        public async Task<Messages_statedMessageConstructor> AddChatUser(int chatId, int userId)
+        {
+            var request = new AddChatUserRequest(chatId, new InputUserContactConstructor(userId));
 
-            var createdChatId = peerChat.chat_id;
-            return request.message.chats.OfType<ChatConstructor>().Single(c => c.id == createdChatId);
+            await _sender.Send(request);
+            await _sender.Receive(request);
+
+            return request.message;
+        }
+
+        public async Task<Messages_statedMessageConstructor> DeleteChatUser(int chatId, int userId)
+        {
+            var request = new DeleteChatUserRequest(chatId, new InputUserContactConstructor(userId));
+
+            await _sender.Send(request);
+            await _sender.Receive(request);
+
+            return request.message;
+        }
+
+        public async Task<Messages_statedMessageConstructor> LeaveChat(int chatId)
+        {
+            return await DeleteChatUser(chatId, ((UserSelfConstructor) _session.User).id);
         }
     }
 }
diff --git a/TLSharp.Tests/TLSharpTests.cs b/TLSharp.Tests/TLSharpTests.cs
index edb7e8d..4b56928 100644
--- a/TLSharp.Tests/TLSharpTests.cs
+++ b/TLSharp.Tests/TLSharpTests.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Configuration;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using TLSharp.Core;
@@ -274,6 +275,64 @@ namespace TLSharp.Tests
 
         [TestMethod]
         public async Task CreateChatRequest()
+        {
+            var client = await InitializeClient();
+
+            var chatName = Guid.NewGuid().ToString();
+            var statedMessage = await client.CreateChat(chatName, new List<string> {NumberToSendMessage});
+
+            var createdChat = GetChatFromStatedMessage(statedMessage);
+
+            Assert.AreEqual(chatName, createdChat.title);
+            Assert.AreEqual(2, createdChat.participants_count);
+        }
+
+        [TestMethod]
+        public async Task AddChatUserRequest()
+        {
+            var client = await InitializeClient();
+
+            var chatName = Guid.NewGuid().ToString();
+            var statedMessageAfterCreation = await client.CreateChat(chatName, new List<string> { NumberToSendMessage });
+
+            var createdChat = GetChatFromStatedMessage(statedMessageAfterCreation);
+
+            var addUserId = await client.ImportContactByPhoneNumber("380685004559");
+
+            var statedMessageAfterAddUser = await client.AddChatUser(createdChat.id, addUserId.Value);
+            var modifiedChat = GetChatFromStatedMessage(statedMessageAfterAddUser);
+
+            Assert.AreEqual(createdChat.id, modifiedChat.id);
+            Assert.AreEqual(3, modifiedChat.participants_count);
+        }
+
+        [TestMethod]
+        public async Task LeaveChatRequest()
+        {
+            var client = await InitializeClient();
+
+            var chatName = Guid.NewGuid().ToString();
+            var statedMessageAfterCreation = await client.CreateChat(chatName, new List<string> { NumberToSendMessage });
+
+            var createdChat = GetChatFromStatedMessage(statedMessageAfterCreation);
+            
+            var statedMessageAfterLeave = await client.LeaveChat(createdChat.id);
+            var modifiedChat = GetChatFromStatedMessage(statedMessageAfterLeave);
+
+            Assert.AreEqual(createdChat.id, modifiedChat.id);
+            Assert.AreEqual(1, modifiedChat.participants_count);
+        }
+
+        private ChatConstructor GetChatFromStatedMessage(Messages_statedMessageConstructor message)
+        {
+            var serviceMessage = message.message as MessageServiceConstructor;
+            var peerChat = serviceMessage.to_id as PeerChatConstructor;
+
+            var createdChatId = peerChat.chat_id;
+            return message.chats.OfType<ChatConstructor>().Single(c => c.id == createdChatId);
+        }
+
+        private async Task<TelegramClient> InitializeClient()
         {
             var store = new FileSessionStore();
             var client = new TelegramClient(store, "session", apiId, apiHash);
@@ -291,11 +350,7 @@ namespace TLSharp.Tests
 
             Assert.IsTrue(client.IsUserAuthorized());
 
-            var chatName = Guid.NewGuid().ToString();
-            var chat = await client.CreateChat(chatName, new List<string> {NumberToSendMessage});
-
-            Assert.AreEqual(chatName, chat.title);
-            Assert.AreEqual(2, chat.participants_count);
+            return client;
         }
     }
 }