Didn't know that you can do it without tool box. Thought it's a feature that is exclusive to it like the "open chest from far away" - feature/cheat.
Learned something new, thanks for answer 
I wanted to make 2 different points tho in one statement.
1.Mercenaries I mentioned for extra team optimizations regarding the missions. Like you can have more mesmers or other class you need.
2.And tool box was for the more individual positioning of them.
Tool box has nothing to do with a more unique team set up and mercenerys has nothing to do with unique positioning.