Or use a simple solution.
The elements used in this screenshot are:-
Catchpoint rail - a scenery object (not a track object). It has to be manually positioned.
- <kuid:368725:20061> Single rail, rusty, for LH catch point or
- <kuid:368725:20060> Single rail, rusty, for RH catch point
Invisible track - probably any will do but the one shown above is
- <kuid:368725:30055> Invisible Track, fine scale (1m segments)
Invisible lever (the white sign and post standing in the middle of the track) - again any number are available
- <kuid2:44090:1007:1> Invisible Lever
Point rodding, two types used both splines, the second type for under the tracks
- <kuid:368725:30062> point rodding, 1x, NSWGR
- <kuid:368725:30071> point rodding, no guide, 1x, NSWGR
Point crank for the 90deg turn in the point rodding
- <kuid2:368725:20086:1> Crank for 90 deg redirection, non-inverting, 1x1, NSWGR
Catchpoint sign (the sign and post off to the right of the invisible lever).
- <kuid2:61119:23077:4> Catch Point
- <kuid2:61119:23078:1> Catch Point RH
The only issues are that the catch rail does not move when the lever is set/reset and because it is a scenery object, it does not move if the track is moved.