Hello again DSG1,
I'm glad to hear that Rebecca's response has been helpful for you! When working with a transaction in the bank feed, one of the key bits is making sure that amounts match, and what she described should work perfectly.
It's good you've noticed the Clear Payment button. This is mostly used for if you're filling in the Pay Bills screen and want to clear out what you've entered so far. For the payments you've already recorded, however, going to them one-by-one and deleting them is a better option to open the bill back up to apply the group payment. This article can help: Void or delete transactions in QuickBooks Online
Once you've done that for each of the nine bills, you should be good to go to re-record the payment with the overage and then match it in the bank feed. You'll note that there isn't a specific field to record the overpayment, so what you can do is enter it in the field with one or more of the other bill payments being included.
Don't hesitate if you've more questions!