In VSD, is there any way to keep more than one inspector pallet open at the same time. It is frustrating to have to keep switching back and forth using the menu bar at the top or right clicking and navigating to the pallet you want to use again

It is the same inspector window you are seeing, only the contents change according to which tool you are using/what you want to insert. You don't have to go to the menu bar to switch between the various contents, just click on the object that you want to edit.