Hey there, Bootz26.

Let's check the payroll preferences and make sure to choose Full payroll. This way, you can add the service key. 

Here's how:

1. Click Edit, then choose Preferences.
2. Go to Payroll & Employees, then choose Company Preferences.
3. Under QUICKBOOKS DESKTOP PAYROLL FEATURES, choose Full payroll.
4. Click OK.

Now, let's active your payroll. Check this article for the steps: Activate QuickBooks Desktop Payroll.

If you have more questions, you can always visit us. Have a good day!