When you receive multiple payments by check per day but only make one summary deposit to your bank ...
- Create a cash (or manual checking [*]) account, named something like "Checks to Deposit" with an Opening Balance of $0.00
- When filling out the New Customer Payment form, deposit the check to "Checks to Deposit" instead of your regular bank checking account.
- At the end of the day, tally up all checks on your deposit slip. In Quicken, in the "Checks to Deposit" account make a transfer transaction "Daily Deposits" in the amount of your deposit slip. Put the amount into the Payment column. As category choose your checking account, surrounded by [square brackets], e.g. [ABC Bank Checking]. Verify that this reduces the balance in the "Checks to Deposit" account back to zero (or you have made a mistake somewhere along the way). [*] During the Add Account dialog, choose a checking account and, on the next screen, click on the words "Advanced Setup" then finally choose "I want to enter transactions manually".