Deductions & credits

'm using the desktop version.

Not sure if this is what you're looking for, but it's perfectly possible in forms mode to have multiple forms open at a time. But you can only view one form at a time, by clicking the tab you wish to actually view at a given moment. Take a look at my screenshot below, and I've got a fat red line over each open tab, with the "SCH C" tab selected for viewing.