How long does the leg lifting procedure take?

I feel like my facial skin is sagging a bit, so I am looking into lifting procedures. I am interested in Onda Lifting because I heard it is relatively painless, but since I simply cannot find the time on weekdays, I plan to visit on the weekend or after work. I am wondering approximately how long the actual procedure takes, excluding the consultation. If I include the time to apply the numbing cream, I should probably allow plenty of time for my visit, right? I have heard that Onda Lifting is relatively quick and simple compared to other lasers, so I am curious how long it actually took from entering the clinic to leaving. I look forward to answers from those with experience regarding whether it is okay to schedule a tight appointment.