Navigate to the exercise page

Click the pencil icon to the right of the tested exercise

Click the "OFF" slide button to the left of "Test Exercises" to turn the test exercise on

Select the type of measurement from the "Measurement" drop down

Select the type of units from the "Units" drop down

Enter the amount of desired decimal places, if none, enter "0"

Select if you would like the data to display on reports in ascending or descending order

Click "Save"