Customer Journey Map fixed sections on scroll

A Customer Journey Map or a Service Blueprint can be quite extense. When you are the creator you memorice all the rows and columns and understand them. But in the end I see both tools as a matrix. And also, lets remember that usually you use this tools to show them to people that probably are not related with design tools or processes. When sharing screen to show a map people usually get lost because they are not sure in which row and or column your on. What would happen if you could make fixed rows specially for this tools to help with the visualizations of them. Cheers!