I use the Square apps during my work day on my phone and tablets, but each morning I do the heavy lifting on my desktop: scheduling, payroll, messages, etc. It's just easier to have multiple tabs and manage everything at once on the big screen. I wonder, though, if there is a way to collapse the menu on the left side? Many other platforms offer this, where it collapses to a series of symbols rather than the spelled-out selections which take up space. See photo.
The only way I know how to do this @CurlyDoodle is by shrinking the size of the browser window to the point that the page becomes "responsive" and shrinks the menu to the bottom of the screen.
You could put in a request for that here - https://community.squareup.com/t5/Feature-Requests/idb-p/product-ideas
I did a quick search for "hide navigation bar" and nothing came up, so feel free in creating a new request for the feature if you want to puruse the idea.
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