Sure thing. Check in with the Custom Games tab on top to check for anyone playing (which I know you already found my lobbies which is good). Alternativly you can create a lobby if the time of other lobbies doesn't work for you or no one else has made a lobby which seems to be the case lately. We certainly need more lobby hosts. Custom Games lobbies have been near non-existant lately (which is probably partly due to no one interested in joining and partly due to Halo's fan base declined after Halo 4)