Hello, I am working on my computer (localhost) on a WordPress homepage for my NGO. Theme: Twentytwelve. I am working on an additional (sub-) navigation on the left side of some specific (!) pages since various days. I tried several things like adding a sidebar, but it does not present a solution to the problem. I have read about conditional tags, but I do not know how to combine this with the menus I have created. I would be so grateful for help!