Seriously? Makes me wonder what state this person is from if (s)he is an adult, if (s)he is a kid i can forgive it, but wow i had to read it twice just to make sure i was seeing it correctly.
Nope, just form a party, right click on your portrate and click convert to ops group. Also i was in a group that took out the Alderann boss new years eve and we had 20 peeps in our ops group, the max is 24 not 16.