Xcode publish with more compatibility?

Question

When I publish to testflight I find there are problems with users who haven't updated to the latest iOS version. This was especially conspicuous during this past series of iWatch updates.

Is there a simple way to set the compatibility before creating an archive?

I tried googling this but alas it was not amenable to my google-fu.

Answer 1

You can set the compatibility by changing the "Deployment Target" in Project > Info