Hello there, katie_r,

I'm here to help manage your invoice payment terms in QuickBooks Online (QBO).

QBO lets you add a new term or edit it. If you want to remove other terms, you can make it inactive to hide them. Let me show you how:

1. Click the Gear icon at the right top.
2. Select All Lists under Lists.
3. Click Terms.
4. Select New to add a new one.
5. To change it, click the arrow under Action, then choose Edit.
   
6. You can also select Make inactive to hide the term you don't need.

Check out the How to Adjust Invoice Payment Terms in QuickBooks Online to help you manage customers in paying their outstanding balances.

Stay in touch if there's anything else you need. I'm always right here to help.