@jimmydee -

You could do this by using different browser tabs (which you’d still need to switch between) for each open board or by using different Miro access methods (e.g. Chrome for one board, Firefox for another). 

Kiron

Or drag one tab over to an external display, or open as many boards as you have displays, e.g., laptop screen and two monitors = three boards at once.

Or if you have one large monitor, have one board on one half of the screen and another board on the other half. 

Regardless of how you accomplish this, it really doesn't sound like a problem for Miro to solve.