No worries!! The Pro SDK can allow you to set certain configurations to change the look and feel of the application. You can simplify it down to a single button on a single ribbon if you wanted!
Here's a blog that gives a good read-out of how it all works:
@DrewYoung Quick question? Related to ArcGIS Pro SDK for.NET. Is there a built in "Host" for the Add-In Module. I am trying to implement Dependency Injection, but nothing seems to work.
