TotallyNotAPilot

How do I launch stuff from the launchpads? I'm trying to find how I select a launchpad from the VAB, or am I supposed to do it a different way? I apologise for such a petty question but I really love this mod concept but I could never figure it out for myself to use.

How compatible would this mod be with Kerbal Planatery Base Systems? I'm personally more familiar with that mod, but now that I found this one I'm conflicted on which one I want to use.