Setting connection rules

I have 4 radios working in WDS AP mode (411/433 with XR2)

They all see each other, but connection between A & D is pretty bad. What I’ve done is simply removed the check mark on from “connected” in the connection list so I can access D through C or B.
What I’d like to know is, what the best way would for D to automatically select whether to connect to C or B depending on signal strength, but never A. Is it only in the connection list where you specify signal strength criteria? I haven’t been able to make it work.
The signal between A - B is -73, A - C is -76, But A - D is -95 ish, while due B - D is very good, but B is under renovations at the moment with power going down quite often, in which case I’d like D to disconnect from B and connect to C instead

Thanx
officegraph.jpg