Why is it important to keep templates? The reason for this is because it is something that can be reused over and over again. Setting up an InDesign file as a template will make it new so you don’t have to recreate the same thing. The only thing is place objects into the appropriate places and edit as needed. Example would be a 10-upBC where this would be your business cards with either labeled as bleeds or no bleeds. It is something that is not going to change unless it goes on custom size paper.