BuddyPress.org

Hello. I can’t to find in settings of BuddyPress , how to aprove first as a administrator when some of the user’s want to create a Group in my website ( I want this as my security and as spam or obscene actions of a user) .
When someone comments on a group or topic i found how to disable or enable hi’s comment , but for creating a groups i don’t know how.

Thanks in advance for the help.