The style of the number -- arabic, roman, samll roman or alphabetical is set in the Numbering and Section Options applied to each section and is independent of the page marker.
I've tried using the "Section Marker", but don't think this is working. I just need the "letter" to switch in sequence everytime I add a page (i.e, A,B,C,D etc.).
It worked! Reduced my production time by half.
Thank you so much!