How To Use Livery For Coaches (br101)

Hi, I have a question..
I’m creating a livery for the coaches for the BR101. When in timetable mode I can select the livery for the 101 loco but how do you select the livery for the coaches? Thanks in advance!

 

Personally I’ve never seen my own liveries spawn on coaches, always had to select them via the scenario planner if I want to use them.

 

I designed some 12t vans and can’t seem to get them even in scenario planner

 

Luck