Any body leave this to their assistant or do they prefer to select it depending on opposition. Mine seems to pick attack movement even if i play braca with vallecano lol
It depends, if you are not confident in doing the right match training, then leave it to your assistant. BUT, If you do know how and when to use it yourself, then you will gain more as its easy to be better than the assistant.
rather do it yourself mate, make a mental note at least once a week to check it out and set it up its much better than leaving your AM to do it, as you said, attacking movement vs Barca.. not a good idea! defending/teamwork is better