Need help with: converting a prop into vehicle for script

Hey, I need your help.
I am relatively new to z modeller and my goal is it to make these stretchers a vehicle.

(Note: There are 3 variants for both stretchers [Normal/up/down] and I need to make them all in one vehicles as extras)

So that there is extra 1 that is the Normal stretcher, than there is extra 2 that is the down stretcher and extra 3 the up stretcher.

So that I can disable the stretcher I don’t need.
(It doesn’t need to be drivable, I joust need to be able to have it as a vehicle)

Props:
strykergurney (Normal)

sittingstrykergurney (up)

loweredstrykergurney (down)

I need to be able to disable the stretcher variant I don’t need.
(It doesn’t need to be drivable, I joust need to be able to have it as a vehicle, and it needs to be only made out of extras)

(They are props)

I saw that redneck modifications did something like that with a different script, but it only displays as
redneckmods.ytd in stream, no idea how they did that.

Thanks in advance :slight_smile: