This is a thing for lazy and forgetful people that don't remember their teams off by heart.
It is just a troop version of the village layouts where you set teams for things like looting teams, attacking team etc. You only have to do it once and click train and then it will automatically divide the troops and/or spells into the appropriate barracks/factory in the quickest and easiest training time.
Eg. If you have a team which has lots of troops like 5 giants, 8 wizards, 4 balloons, 3 wall breakers and a bunch of archers, you can set the design of the team and name it then once it saves you can go and auto-train that team easier instead of flipping between your last raid to double check you have the right amount of troops and back to the barracks to match up the numbers and it can also save trying to write it out as well.
That is all from TomHitchy's brother DJHitch♥♥♥♥.
Hope you add this in because I'm lazy training troops ;)

