What criteria are used to select the type of cartridge for the Shurink procedure?

If you look up information regarding Shrink, you will find explanations stating that the application depth varies depending on the cartridge.

In that case, I am curious if the choice varies depending on which part of the face you intend to improve, and if skin thickness or the condition of the fat layer is also taken into consideration.

Rather than accepting the fixed configuration as is, I would like to verify if the plan is tailored to my individual needs. Would it be alright if I asked during the consultation to request an explanation of the reason for selecting the cartridges?