allow part of a split to be paid at the time it is entered
Allow users to designate that one of the splitters has already paid so as to better keep track of who has paid what to whome.
1
vote

Update: when adding an expense, you can now click on the payer token and choose multiple payers, then add all people who have paid for the expense.
I’ll pass on the feedback! For now, you could try adding a note or comment to the bill with details on who has paid, or immediately adding a payment after you finish adding the bill.