Hi, just wondering if the cake board that separates and supports the cake are suppose to be covered? (For example between a 9 and 6 the 6 has a 6 inch board under it) I have been buying the Wilton cake boards that are cute to size and placing cake right on the board then stacking cake. I recently saw a video were the board was cover top and bottom with wax paper. Should I be doing this?

Cake circles aren't made to be covered--they're fine as is.
Waxed cake circles are typically used for cheesecakes--if used with cake, the cake could slide off.
Waxed paper can be used under each cake circle to help prevent the surface icing from being removed during disassembling and serving.