Screenshots would be the ideal way to answer this but as I have no way of posting images, I will attempt a text description
Simplest case scenario: two intersecting single line tracks (no junction between them).
Track 1: Designate this the North-South Track and place two signals on this track, one on each side of the diamond crossing. Both signals are facing traffic that will be approaching the intersection - i.e. they are placed "back-to-back" on opposite sides of the intersection. Each approach must be signalled even if no trains will be coming from one of the directions. Name one signal DmdNorth (short for "Diamond North") and the other DmdSouth. The exact names used are not critical but they will need names for the Diamond Rule. Invisible signals can be used.
Track 2: Designate this the East-West Track and place two signals on this track, one on each side of the diamond crossing facing the traffic that will be approaching the intersection. Name one signal DmdEast and the other DmdWest.
Add Diamond Crossover rule to your layout and Edit its properties as listed below.
Select The first available Diamond Crossing Signal Group - you can have up to 8 diamond crossing groups controlled by this rule - I do not know if you can add a second rule to control more!!!
Identify the
north signal (DmdNorth in example above), the
south signal (DmdSouth), the
east signal (DmdEast) and the
west signal (DmdWest)
The principle is essentially the same (but with more signals) for intersecting double lines and I have used it for double track junctions to provide protection for the two crossing tracks. Here one of the signals in each pair will be invisible signals.
The limitation of the rule is that only 8 diamond crossings can be created this way - until I started writing this post I had not thought to see if a second diamond rule could be added.
Peter Ware