Scenarios let you keep several versions of the same deal's assumptions side by side — a base case, a conservative case, a lender case — without duplicating the deal. Each scenario has its own inputs and results; switching scenarios switches the whole analysis.
Every deal starts with one main analysis — the deal's default scenario. Additional scenarios are alternative worlds layered on top of it. The default carries a star, is what the deal opens on, and can't be deleted; you can move the star to another scenario at any time.

Your plan determines how many additional scenarios each deal can hold — the base analysis is never counted against you. When you reach the limit, the New Scenario control tells you directly: it either offers the upgrade that raises the limit or reads "Scenario limit reached." Deleting a scenario always frees a slot. The controls in the app show your actual allowance — that's the number to trust.
With more than one scenario, the Compare Scenarios view puts them side by side — the headline metrics (DSCR, cash flow, cash-on-cash, IRR, equity multiple, and more) and the financials beneath them, with the best value in each row highlighted. It's the fastest way to see exactly what one changed assumption does to the outcome. Scenario comparison is a plan capability; if your plan doesn't include it you'll see the upgrade path on the button.