@katherinejoyceO  : if you don't mind me saying so, it is best to avoid using Journals - for the average user, they are difficult to understand - much better to use the 'standard' transactions we're all used to.

@KA2022 the easiest way to create an advance payment (deposit) is the same way you would create a payment against an existing invoice (Bill).

Go to https://app.qbo.intuit.com/app/billpayment select the customer name & enter the amount (if you have existing bills for this customer de-select them).  In the Ref no. field, enter the cheque number or BACS or leave blank.  In the Memo field maybe enter a comment that it's a deposit against XYZ.

You'll notice that a message "This transaction will create an additional credit in the amount of £xxx" appears in the bottom left.

When you later enter the supplier's bill it will be unpaid.

Return to the above transaction, or select Pay Bill, and this credit will be available to pay the supplier's bill in QB.

Hope this helps.