Minimal Ellacor for sagging marionette?

What is the minimal area that needs to be treated to treat subtle marionette lines? Would the section sweeping up from the mouth corners to the cheekbone and down to the jawline be enough? Or do I have to start at the bottom of my nose effectively also covering nasolabial? The reason I ask is I am prone to slow healing and would prefer to go section by section. thank you.