How to create a group channel operator

Whenever I try to register an operator for the group channel, it says that “Not Authorized, User is not an operator” so my question is if the user is the creator of the group then there should be no problem to create that user operator or moderator of that group channel, I couldn’t find the proper documentation for that,

Please guide me with that.

Hello! the reason why you got that Not authorized error is because you attempted to add operators but you were not operator.

Try to add operator ids in params when you create an open channel with params, then try to add other operator with a user who is operator.