Can't change pipe offset to add vertical pipe

[LyleHardin]

I'm trying to add some vertical pipe to a model. All the instructions and videos I've seen show how to change the Offset to add vertical pipe in a plan view. My offset is greyed out as soon as I pick the first point. Why can I not add a vertical pipe or change my offset? My ribbon (Revit 2017) does not appear to have everything in it that some of the Revit Help indicates.

[LyleHardin]

Well, something happened. It's working now. I started a new project and everything worked fine. Went back to my other project and still no go. I copied a piping style, changed some views and it's working. I'm not really sure what did it. I have found that currently, I can add vertical pipe in a floor plan (a level) but not in a section cut that is rotated to be a plan view.

Now I just need to get a handle on when to click, enter, pick apply, change offset, etc. Adding vertical pipe is not very intuitive (to me).