How do you pay a terminated salaried employee for a partial month?

I'll help you pay the terminated employee, aaron63.

When you pay your terminated worker, you can create a paycheck the same as you would normally do. Here's how:

1. Click the Payroll menu.
2. Go to the Employees tab.
3. Click the Employee name.
4. Select the Edit employee button.
5. Click the pencil icon beside How often do you pay [Employee Name]?.
6. Manually edit the next payday date.
7. Click Done.
8. On the prompt, choose the Only [Employee Name] (a new pay schedule will be created) option below "Who should have the updated pay schedule?".
9. Click Continue.
10. Click Done.

Once done, you can now pay the employee using a different payment date. I've added a great article here for your reference on creating payroll checks in QuickBooks Online Payroll: Create paychecks in QuickBooks Online Payroll and Intuit Online Payroll.

Please let me know if you need further assistance with the process. I'm here to lend you a helping hand any time. All the best!