Custom gcode for cut start/end?

Is it possible in lightburn to add custom bits of gcode at the start and end of a cut? I’m planning to use it for a plasma cutter and need to do a touch off on the material before the torch fires, then lift to a pierce height, fire the torch, pause for some amount of time based on material and thickness, drop to the cut height, activate the height controller and start the cut.

This looks something like

M100
M28.2 Z
G92 Z0
M101
G0 Z3
M3
G4 PX.XX (pierce time, needs to change based on material)
G1 Z0.8
M10

Can lightburn do anything like this? I remembe asking a few years ago and I think the response was it was not implemented yet.