Payment approval workflow

We load 500+ invoices via the spreadsheet loader and print checks every year during the first quarter.

Instead of sending each invoice individually to the manager for approval, we are planning to customize the payment process workflow to approve the entire payment batch.

I have reviewed all the available options in the payment approval workflow. Could we use "Invoice Group" or "Invoice Source" in the payment approval workflow to identify the transactions?

I don't see these options available in the workflow.

Thank you for your help!