How do I record 2 pay levels for 1 employee in QB online and how can I adjust the information in workforce so that the employee can record the 2 pay levels?

You can add another pay type under your employee's profile.
 

Here's how:
 

1. Go to Payroll and select Employees. 
2. Select your employee.
3. From Additional pay types, select Add. If you are adding for the first time, choose Start.
4. From the Pay type dropdown menu, pick a pay type category or create a new pay type. 
5. Enter the Name and your preferred type. 
6. Hit Save.
    

Regarding the Workforce, employees are only able to view their pay stubs, time-off balances, and year-to-date pay summaries. However, recording another pay type to a specific employee can only be done directly inside QuickBooks.
 

For more information on how to add multiple hourly rates/wages and what to do if you no longer use them, you can visit this material: Add or change pay types. 
 

Also, if you want to get a close look at your business finances, there are several payroll reports you can use to view information about your business and employees.
 

If you need help with QuickBooks, let us know in the comments.