How do I put a footer on my quotations and invoices?

Welcome to the Community, @usersales17.

I'm here to help add a footer to your invoices and quotations in QuickBooks Online (QBO).

We can easily add a footer text by customizing the invoices and estimates in QBO.

Here's how:
 

1. Open your invoices and estimates.
2. Tap Customize at the bottom part of your screen.
3. Then hit Edit current.
4. Choose the Content tab.
5. Click the Footer portion and add footer text and tick Done.

Please see the screenshot below for visual preferences:

I'd also like to add that the option to share a quote's link is unavailable at the moment. You'll need to convert it to an invoice for you to get the link. But in case you'd like to link your invoice to a quote, I've got you this article for further guidelines: Set up and send progress invoices in QuickBooks Online.

In addition, here's an article to help you manage invoice payments in QBO: Record invoice payments in QuickBooks Online.

You can also post here again if you have any additional QuickBooks-related concerns or need help in managing sales transactions in QuickBooks. I'll be right here and will be happy to assist. Take care.