Looking for a information what these spots are used for OEM switches. Or What everybody else uses them for with details of what an how

The blank ones next to the right of the VSP

 

just blanks..

people have used them for auxiliary items...for example; exterior lights, radar detector warning lights, etc.etc...
anything that you can think of putting there, it has been done.


How? depending on what kind of switch... you cut a hole into the blank and fish your switch through...then wire it up to your auxiliary item.