Setting up a non-resident employee in QuickBooks Online is pretty easy. QuickBooks makes it easy to manage your business while you get ahead with your work. I'd be happy to assist you with entering a non-residence tax info.
Based on your description, it sounds like you're trying to set up an employee who isn't a resident. To complete the employee’s setup, you can use a dummy SIN for that employee. However, you can change the information you entered in QuickBooks anytime.