The presence sensor will sense as long as someone is in the room breathing. The motion sensor may not pick up when you are sitting at your vanity doing makeup and not moving for x minutes.
With the motion sensor you will need to define the longest you will sit at the vanity with minimal movement and set the Hubitat automation to leave the light on for that duration + about 1 minute. So let's say that is 10 minutes. You set the automation to turn the lights off after 11 minutes of no motion. So when you leave the vanity thereby creating a new motion event, the light will stay on for another 11 mintues.
With the mmwave sensor, it will only stay on for whatever time after last presence you set it.
Here are two threads about various mmwave sensors:
