On any of the main run screens, Setup in bottom left is where nearly everything is for getting it to map. 

Make sure tractor and controller/bar show up on the left side. It must be since that's where you'd see Auto 

On the right half of that same work setup page, do you have NH3? Need to have a product named and selected there

On the rate controller I'm guessing you can check some diagnostics like valves, sections, prime/purge. Will any of those get it to map for a few seconds? Once the first stuff is done. Product name should show in the top left on any coverage map page