How it works Target Group Camera

Hi! In my turn based game I would like to make that the camera follows a character in its turn and another character in its turn. Cinemachine looks what I need, but I'm a beginner and a bit overwhelmed with the number of options that it offers. As far as I know I need the Target Group to do that, but I can't find tutorials of how to use it. I'm making my main camera as a brain and add the Target Group camera in the hierarchy, but the camera still give 'follow' and 'look at' to one target, and the 'target group script', apparently, is for multiple targets at the same time. Should I change the "follow" and "look at" target by script? I'm a bit confused, if someone could help me get what I'm looking for I'd appreciate it. Thanks in advance!