Does the re-treatment cycle vary depending on the treatment area?

While researching Botox, I heard that the duration of the effects varies depending on the area.

I am curious if the management method differs for areas that affect facial expressions, like the forehead, and areas like the jaw where muscle size is a concern, even with the same Botox.

For those who received treatment on multiple areas, did the point at which the effects wore off also vary? I would like to know what criteria you referred to when determining the timing for re-treatment.