A regular customer wants to settle at the end of the month
Use Due / Credit — a khata account. Charges collect against their name and the revenue is counted when they actually pay, not when the charge is made.
Open Due / Credit, create the account, and choose Due at payment time. Every charge lists under that name with its date and bill number.
When they pay
Record the settlement against the account and the balance clears. Profit & Loss counts that money when it arrives — which is why a large unpaid khata does not flatter this month's figures, and should not.
Still not sure? Ask us the exact question about your property and we will answer it.