Reply to "How to - shelf layout control multiple points"

I use a simple 3 button "Super Switch". 

You can use one of three remote switches at three different outlets to power three different DCS power sources with a three button hand held.  Very simple, readily available at hardware stores and some big boxes.

You can use them anywhere in the house or shop for 110v circuits.  The hand held can also be mounted at the door to the train room to cut power at  three selected outlets anywhere in the room.

I use it for three added peninsulas where each peninsula has it's own individual control panel.   Walls and doors do not affect it's performance.