Hello Momma Gus,
Welcome to Community! I can see how beneficial it would be, to enable approval of expenses in QuickBooks Online, so they can be paid on time. I'd be happy to provide some insight here.
Although this feature isn't available in QuickBooks Online, you can upgrade to QuickBooks Online Advanced, that does provide the ability to set up and use bill approval workflows. You can create and send workflows automatically, as well as reminders that action is required. To learn more about setting up bill approval workflows, click here.
If you have any other questions, please don't hesitate to reach back out. We'd be glad to help!