[V.A.C.]

Hi there, A quick question for everyone. When is it okay to go into Team Matches? Sometimes when I log into the game I can't find a Objective Server with a good ping to get into, so I scroll around and see that there are lots of Team Matches with a good amount of people and good pings. I am unsure if I am allowed to play or not. Are Team Match servers strictly for clan members or is anyone allowed to play in them? Or I guess I should just log into one and see if I get yelled at to get out?