Hi everyone,
I find it very odd that Enable Character controller is missing from the PM default actions. I found this old post and It would be nice if someone uploads this script onto the ECOsystem.
https://hutonggames.com/playmakerforum/index.php?topic=1556.0
These types of actions missing are always the bump in the road that limits playmaker users. In order to set position of a character controlled GO, you'll need to disable character controller. I hope this gets included in the main default in future updates.