Hello there, @kresgekr.

Let me help you locate the Credit when creating a vendor credit in QuickBooks Desktop. 

You can easily enter vendor credits in QuickBooks Desktop to later use them against the next bill you receive

Here’s how.

1. Go to the Vendors tab.
2. Select Enter Bills.
3. In the Enter Bills window, select the options button for Credit at the top.
4. Select the name of the vendor from the vendor drop-down.
5. Enter the Date. 
6. Enter any associated credit number into the Ref. No. field.
7. Then enter the amount of the credit into the Credit Amount field.
8. Then select the affected accounts or items on the Expenses or Items tabs at the bottom of the window.
9. Then, click Save & Close.

Please see the screenshots below.

For your future reference, you can use this article if you wanted to pay bills online. Using this feature, you can pay your vendor bills directly in QuickBooks Desktop. Then, QuickBooks automatically records your payment so you have an accurate record. Use Online Bill Pay In QuickBooks Desktop.

Let me know if you need further assistance with vendor credit. I am here to help. Take care.