Its been some time since this post. I looked at the link and I'm not sure I understand. I am able to create graticule and measured grids but not referenced grids which is what I need. I need the ability to say look in A1 to find X feature on the map. For now, I'll continue using ArcMap for this. However, this is a feature that Pro needs to eventually have if they want me to stop using ArcMap entirely. I have a list of things that also force me to continue using ArcMap as well but this is just one of them.
Josh White, AICP
Principal Planner
City of Arkansas City