Xcode pop up menu in build settings, how do I get there?

Question

I'm following the tutorial for adding grabkit to my project here:

https://github.com/pierrotsmnrd/grabKit/wiki/How-to-install-GrabKit

and it asks me to add some seetings to header search paths. However, I can't seem to get the screen that they have after clicking everything that I can. What am I missing?

Answer 1

Try double clicking where it says <Multiple values>.