Simplify the following text for a Grade 9 native English-speaking person.
Original: A user with a flag is said to be a member of that flag 's ` user group ' , giving them certain ` permissions ' and the use of certain features of the MediaWiki software .
Simplified: A user with a flag is said to belong to that flag 's ` user group ' , giving them certain rights and the access to certain features of the MediaWiki software .