Layout 2017 Trays - Pin & Auto Hide

trays
layout

#1

Apologies if this is nonsense but in Layout 2016 i’m sure i could configure one tray to be pinned and the others to auto hide. In other words the pallet always reverted to the ‘main’ tray which meant important info like Layers etc was visible at a glance.

Is this no longer possible in Layout 2017?