My problem is, I imported a PADS design and it shows a lot of mechanical layers that were probably present in the original design. The problem is, I don't really want those layer names and I really want to add a layer named "Outline" so I can add my PCB outline tracks. I see the dialog box where I can view and change layer colors, but I don't see anywhere on there where you can add a new layer (that you define the name for) or remove layers. This seems like a very simple function and I hope I'm just missing it. Does anybody know how to accomplish this? I have already disabled the checkbox in the mechanical layers window to show all layers even ones that are disabled and none of the normal Altium layers are there.