I'm quite new to layout in ADS. When I opened a new layout and tried to create a new substrate, I only had a limited amount of layers to my disposal. The layers I can use are shown in the attachment to this question. As you can see, I'm unable to use the pcvia1 ,2... layers that I'm used to. How can I get all these layer that I'm used to back?
(If I create a new workspace the problem is gone, but I want to stay in the old workspace as I've already done a lot of simulations in that workspace.)