TTT is supposed to be a fun server. If everyone is having fun, I as a admin wouldn't really act upon these small acts of "teaming". However, If it gets to the point where it obstructs other people's experiences, that's where I would act. If a admin isn't on, tell them to stop. If they don't stop do !calladmin on them. If a admin doesn't come on, or isn't acting you can post a player complaint. I'm not too experienced in TTT, so I don't know how frustrated you are because of teaming, but everytime I see this happen, everyone is having a blast or if it gets that bad I would just have to tell them to knock if off. In my opinion, TTT isn't supposed to be played by strictly following the rules, but to have fun and go interact with other people with the rules guiding how you play. Out of all the servers I regularly play on, TTT is the funniest with no contest.