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

Invites users to an active group call. Sends a service message of type messageInviteVideoChatParticipants for video chats. Returns object_ptr<Ok>.

NameTypeDescription
group_call_idnumberGroup call identifier.
user_idsstringUser identifiers. At most 10 users can be invited simultaneously.

More details on telegram's documentation.