I designed a handy little tool for helping track who is doing what during exploration mode, while keeping track of marching order. I'll throw an upload on this site too. It uses 28 x 25, so you have to add 3 more to the width of any roll20 map you make (example of it in action in the blog post).
http://knowdirectionpodcast.com/2020/12/foxs-cunning-exploration-tracker/