If your using display panels highlight the panels by left clicking on them then right click,select match texture then click on your door otherwise create a material with the same colour image that you used for your door
I suggest you subscribe to the on line video tutorials they are very helpful indeed
There is no simple checkbox to do that. You need to add sheet stock to your "Materials Library" that matches the finish of the doors. Choose "Change Materials>Sheet Stock" from the right-click menu when you are in Custom Layout. There is also a "Change Materials" link when you are in the Batch Processing dialog.
Dennis
PS. I meant to add that this is for the selected cabinets and assemblies in your job.