Q1. Can you please clarify what the question is a bit more? A state is doing what the tasks assigned to it are doing. If you use the “Action State (Super)” and do not assign a task to Update, then the state shall not do anything in its Update.
Q2. Yes, you can manually switch states from code, using the “FSMOwner.TriggerState” method providing the name of the state you want to force trigger/enter. Thus for this, you will also need to give a unique name to the states you want to use in this way.
Q3. Do you mean to have a list of tasks in the graph UI in the Super Action State, that will execute OnInit and OnPause (on top of the existin OnEnter, OnUpdate, and OnExit lists) ?