Clans are full of jobs. First there is the clan owner. Then from there, there are ussually a second in command, treasurer, secretary, and other jobs that could be filled in at the whim of the clan owner. However if you clan does something bad it will be disbanded by the CC Corp.
A list of some clans that have been made before are:
Crimson Knights
Cobalt Knights
Moon tree
Tan
Twilight Brigade
For they have disbanded on their own it seems but if you would like to take over these clans feel free.