Hi,
yes, the action is an override, it's using another class that handles the logic of letting the user choose which type of update.
If you want to create an action that only need fixedUpdate, look at: AddForce
Make a copy and trim it down, I always do that when I create a new action, I never start from scratch, instead I take an existing one, modify it and copy paste from other actions all the bits I need ( I have a bad memory for all apis... so I just look on other actions everytime)
Bye,
Jean