Left Knee Lever pushed to the left. Left Knee Lever pushed vertically, etc. Shown below are the C6th tuning's most common Pedal and Knee Lever changes in use today. Tablature for the C6th is not as standardized as the E9th has become. However, when the course material varies from the above, the student can usually adjust to it and work out another way to duplicate the tablature and the recorded playing.
Every instructor has preferences, which they identify and usually explain.
Differences between your copedent and the instructor's should not pose an insurmountable problem.