I produced a TCO for controlling the points. It uses the track diagram with push-buttons to control the points. I've also added red/green lights to indicate block occupancy.
A wall panel showing the network allows me to check the occupancy status of the hidden channels and the blocks. Detection is by ILS and relay.
NB: For cabling, I mainly use telephone cable with 4 pairs of rigid wires.
What's more, I can visually monitor train movements using 6 video cameras judiciously positioned in the hidden levels.