Visio 2021 trying to get Rack units numbers on the Rack Diagram

[Davidbside]

I am using VISIO 2021 and doing rack diagrams, I am trying to see if it's possible to get RU (Rack units' numbers) added to the rack diagram, currently have a 48 RU rack diagram and there are no RU numbers on the left-hand side of the rack.

[wapperdude]

This is a double post.  Please don't.  Answers are in your other post re same issue.