Welcome to the QuickBooks Community! It's great to see new members. QuickBooks has many great products. It sounds like your talking about QuickBooks Online Payroll. I'll set you on the right path.
In QuickBooks Online Payroll, you can edit the Primary work location, but you can't create a new one. Follow these basic steps for editing work locations:
Go to the Gear Icon.
Select Payroll Settings.
Under Business Information, select Work Locations.
Click on the Primary location, and change the information.