Dale, you have better photo skills than I do and I would suggest you take series of photos and add an article to the POG site.

The placement is shown in the Prevost owner's manual, but a picture is infinitely more valuable.

The key to placement of supports is to be under a vertical member of the axle subframes. Supporting the coach under any other point can be very dangerous. Also, if the axles with the emergency brakes are to be off the ground the bus has nothing to stop it from rolling, so it is important to either be completely level on the floor or to chock the front axle.