View Source ExTDLib.Method.AddChatMembers (ExTDLib v0.0.4)

Adds multiple new members to a chat. Currently, this method is only available for supergroups and channels. This method can't be used to join a chat. Members can't be added to a channel if it has more than 200 members. Returns object_ptr<Ok>.

NameTypeDescription
chat_idstringChat identifier.
user_idsstringIdentifiers of the users to be added to the chat. The maximum number of added users is 20 for supergroups and 100 for channels.

More details on telegram's documentation.