Belg, I even installed block switches for my underground layover yard, although I'm running DCC.
When a train is 'parked' there, I kill the power to that track on the control panel. This way nobody can start a train unintentionally and stage an underground cornfield meet!
Ron
The switches control the power to the tracks. The siding at the bottom left is controlled by its turnout. And the pushbuttons line up all the turnouts for that track.