PAYMENTS TO THE ARTIST: drop a promoter's check, an ACH confirmation or a wire confirmation on Money > Import (one or a whole folder). ATOM reads who paid, the amount, the method, the check number and the show, and knows a payment to the artist is money coming in: it never becomes a receipt or an expense. A message says how many it found; tap Match to settlements.
MATCHING: each slip shows the settlement ATOM matched it to (by venue, show date, the show code on the slip and the amount still owed), what was owed before it and what is left after. Pick a different show from the list if it is wrong. View slip shows the document.
MARK PAID: tap Mark paid on one, or Mark all paid at the bottom. The amount goes into that settlement's received by check, ACH or wire, with the check number and date, and the slip is filed under the show in Files > Show documents as a Payment confirmation. When the only thing still owed is merch (the settlement's Include merch box is on), it says the show is paid in full and the rest is merch. Undo in the message puts the settlements back (the filed slips stay). The same check dropped twice is recognised and not counted again.