Can you change the terms days to 7seem to only do 30.Thanks

Welcome aboard to the Community, paul-duncan.

Yes, you can change the terms to 7 days. Here's how to get this done:

1. Click the Plus icon at the top.
2. Select Invoice.
3. Enter the necessary information. 
4. In the Terms field, click the drop-down menu and select + Add new.
5. Enter the Name of the new term.
6. Choose the tick-box Due in fixed number of days, then enter 7 on the box beside the days.
7. Hit Save. 

To get to know more on how to create an invoice in QuickBooks Online, here's an article that you can visit: Create an invoice.

I have also another resources below that will help you in the future:

• Record a customer payment
• Record a customer refund

Please don't hesitate to get back to me if you have additional questions. I'm more than happy to answer it for you. Enjoy the rest of your day.