move and group slaves again

Hi... I started dgs with a melee team (5prot paladins) and have any issues with enemy spells that concentrated the damage in any ground area. I play the slaves stacked with the main but in some situations i need to move The slaves away to avoid this ground areas that makes damage and After that regroup. Is There any macro or keybind to help me with this?

Make some key that when you press it it sends all the followers in a different direction, or just all of them strafe one way or another, then have them all follow you again once it's done. How you do that is going to depend on what you're using.