It's good to see you here in the Community, mike-mindfulpeop.

We can set up and use the Recurring Transactions feature to create an invoice and send it on a future date in QuickBooks Online.

Here's how:

1. Click the Gear icon ⚙ and choose Recurring transactions.
   
2. Tap New.
   
3. Select the type of transaction to create, and then select OK.
   
4. Enter a Template name.
5. Select a Type: Scheduled.
6. Under Options, select Automatically send emails.
7. Fill in the necessary information.
   
8. Hit Save Template.

To know more about how this feature works, we can go through the articles below. On the same links, we can find tips about the difference between each transaction type as well as a brief video to serve as our visual guide:

Create recurring transactions in QuickBooks Online.

Schedule recurring transactions created with a template.

You can always get back to me if you need additional assistance with sending invoices in QuickBooks Online, mike-mindfulpeop. Have a great rest of your day!