Schedule Dimenion Control

[Narska]

The rough opening dimensions below use the "W/D Width on the Reveal Side" parameter. How do I show this dimension in fractional inches like the width/height dimensions to the left of them?

[insideru]

All calculated dimensions in schedules are controlled by the units set in Options -> Project preferences -> Calculation Units.

Your desired parameter represents a lengh unit, so set the (top) lengh unit to feet & fractional inches.