Mark who paid whom, in what method.
Settings → Household → Settle-up. See net balances per member. Click Settle on a line to record a back-payment with method (Venmo, Cash, Bank transfer).
Net balances roll up across every split. Positive = others owe you. Negative = you owe others. Click any row to log a settlement; the balance resets.
If a member has a Venmo or PayPal.Me handle on file, their settle-up row includes a Pay via Venmo / PayPal link with the amount pre-filled — tap it, send the money, then mark the settlement in HomeWeal. Details in the payment links article.