Hello everyone,

If you want to have this feature in QuickBooks Online, I'd encourage you to share your feedback with us, We're always eager to hear from our users.

Here's how:

1. Access you QBO account.

2.Click on the Gear Icon.

3. Select Feedback, enter you suggestion and click next.

We really appreciate your input, and our product engineers will take a look at your suggestions. 

You may want to to check this page to keep you updated on new QuickBooks product: Product Update.
 

I've also added this article to learn how to personalized your sales form: Customize invoices, estimates and sales receipts in QuickBooks Online.

If you have more concerns, you can always reply to this post. We're available 24/7. Have a good one!