I appreciate you posting your concern here in the forum, @Charles284.

I'll ensure you can record your advance payment accordingly in QuickBooks Online.

Using the Expense feature, you can record the advance payment for your vendor and set it as an Accounts Payable.

Here's how:

1. Head to the +New button.
2. Choose the Expense option.
3. Pick a Payee and Payment account.
4. Proceed to the Category details section.
5. Pick Accounts Payable (A/P) under the Category column.
6. Indicate that it's an advance payment in the Description column.
7. Enter the amount in the Amount column.
8. Once done, select Save and close.

For more information about managing your expense transactions and creating further changes, please visit this page: Enter and manage expenses in QuickBooks Online.

Moreover, consider running and customizing a report to have an overview of how your business is doing financially. This will help you make informed decisions to ensure your business is on the right track.

Keep us posted if you have additional questions about recording vendor payments or other related concerns in QuickBooks Online. We're here to help.