To set the hourly rates for various tasks for your employees, click the "Team>Time Tracking" tab.
Once on the Time Tracking page, find the employee whose rate you want to change and click on the Pencil icon to edit that employee's time tracking.
From there, scroll down to the "Hourly Rate" section.
Under Hourly Rate, enter what you want the employee's rate to be.
Once you are finished editing, click the "Update" button at the bottom of the page.
After you click Update, it will take you back to the Time Tracking tab.