Is it possible to create square or other non-circular zones?

I’ve been thinking about the map page quite a bit and have been looking for an easier way to track movement across the map. It got me thinking about the old school Rand McNally maps, where an entire “page” is divided into a grid where you have labels A-Z (or A-whatever) across the top, and numbers 1-X on the side.

Having this capability would allow you “zone” an area into hundreds of zones labeled by the grid, e.g. T15, B5. That might open up all sorts of tracking capabilities, just tracking an objects movement from these “automatic zones”.


Closing as a duplicate. Please search for existing requests before posting.