To assign someone else as a moderator, only a moderator can do it. Are you a moderator for that space? If not, i would suggest that you "Lock" the room to assume moderator privileges. If you still dont have the ability to make others a moderator, i would check if the user has Spark basic messaging license.
Hi, thank you for your hints. But I am moderator and have a lock space already.
Where can I find "Spark basic messaging license" ?
What type of license should I have to have for assigning other participants as a moderator?