Can we PLEASE have different price variations for different session durations. We have the option for multiple prices depending on LOCATION and PRACTITIONER but not time?

Example: Massage Therapy. I should not have to create 4 separate sessions for Relaxation (30min, 60min, 90min, 120min) and another 4 for Therapeutic, and another 4 for Prenatal, and another 4 Lymphatic.

What should be 4 session types currently has to be 16 sessions for a client to choose from.