Is it okay to receive Volneumer on only specific areas rather than the entire face?

I had a question while looking into Volneumer.

I am a little more concerned about the area under my chin than the sagging of my face as a whole.

So, I wondered if it was possible to focus on managing only the areas of concern rather than getting a treatment for the entire face.

Is it always better to have a wider treatment area?
Alternatively, I would like to know if it is possible to select only the necessary areas based on the current condition of the face.

I am curious how those who have actually received a Volneumer consultation decided on the treatment area.