I spam my target/assist macro usually they target first try but nothing sucks worse than being half way through a fight to see 1 slave is targetting nothing. So I spam it due to the latency.

My tanks 1 key is attack- default key actually. All my slaves just have the macro /assist jinkobi for their 1 key- works for me. That way I can just walk and press 1 and everyone is on the same page.