Is it common to treat the entire face the first time receiving Ultherapy?

Since it's my first time, I wonder if I need to do the whole face.
Or I'm not sure if I can just do the parts I'm most concerned about.

I'm especially concerned about my jawline and the corners of my mouth.
I am wondering if doing the whole thing is more effectively better.

Those receiving Ulthera for the first time
I would also like to know how you determined the areas during the consultation.