Stair carpenters often quote by the riser, so the budget now does too. Type laborStairRiser under prices and the Labor section gains a line: the risers of every stair in the plan (both flights of a stair with a landing, and a deck's own stair) times your rate. Labor is not taxed or given contingency, like the other labor lines.
Hand check from the test: a 108 in rise at the 7.75 in code limit needs ceil(108 / 7.75) = 14 equal risers, so a typed 40 per riser gives 560. With no stair rate typed the line is listed as unpriced and left out of the total; no rate is shipped. The page's price list and picker include the new name.
Not covered: finish stairs (skirts, newels, balusters) and any real contractor's rate.