The MC CAS module allows control and manipulation of Sim appearances down to individual body parts. Ranges can be set for the biggest and smallest each of these body parts so Sims generated by the game will use the ranges as desired. It also provides some built-in functionality like changing the bellies of pregnant teenagers as they progress through the pregnancy.
In the Sim menu, MC CAS allows changing various features that are Sim-specific and found in the CAS screen in the game like Name, Voice, body appearances and fitness/fat. Also, “Favorite Drink” can be changed from the MC CAS menu (I know it’s not in the CAS screen, but it WOULD be if EA allowed it to be configured like they had in past Sim games!!)