Some Minions can be Commanded to perform certain actions. This requires you to use the corresponding Command skill, which will cause one of your Minions to carry out the Command.
Supports Minions which have Command Skills. Supported Minions have massively increased cooldown recovery speed for Command Skills they use, but deal no damage with non-Command Skills.
Recruit artillery Minions that takes up positions behind you. They will lay in wait for your Command then fire volleys of arrows at the target location.