Just got it!  L love all the options but trying to determine how they operate. For example, there is a Convection Bake option and a Multiple Rack option. One of the advantages of Convection Bake us the ability to supposedly bake evenly with multiple racks. Since the Multiple Rack also uses convection then what is the difference between the two options?  Why could one just not use the Multiple Rack option for baking? Usage manual needs a bit more detail on the options.  Giving average rating until I use the oven more.