I think I might have left out some pertinent information.

The header I selected was "Alphabet," which is the third choice down in the header list. When I used that header, I was unable to include a page number.

I deleted that header, then put in a new, blank header. I then typed in some text, and after that, I tried inserting a page number.

I had no trouble inserting the page number, using the Current Position option.

Next, I deleted that header, and tried using the Alphabet header again, just to see what would happen. Again, I was unable to add a page number. The menu items I mentioned previously were once again greyed out.

My conclusion from this is the Alphabet header doesn't support or permit page numbers inside it. Either that, or there's a bug.

I'll go ahead and use the plain, blank header for the time being. In the meantime, is it possible for you, or anyone else reading this, to see if a page number can be entered into the Alphabet header?

Thank you for assisting! Jd