How are movement and natural changes by area evaluated during a Botox consultation?

I am curious if, during a Botox consultation, the movement of the facial expressions and the shape of the area when at rest are checked separately, even for the same body part. I have heard that the treatment plan is based on the current level of muscle usage and left-right disparities to ensure the desired changes are not excessive; I would like to know what facial expressions are asked or from what angles the condition is assessed during the consultation. I am also curious if the recommended dosage or re-evaluation timing differs depending on whether it is a first-time treatment or if the patient has received treatment before. I would like to know how long it is generally advisable to avoid activities such as exercise, drinking, and saunas before and after Botox, and when I can resume normal facial cleansing and makeup. Please explain the expected temporary reactions after treatment, situations where I should contact the clinic, and the appropriate time to check the effects. Finally, I would like to know if the duration of the effect is considered solely, or if facial movements and balance are re-evaluated when deciding on the next treatment.