Hi,
What do you mean by "Playmaker control".
there are two distinct concept in Unity:
-- attaching Gameobject together, forming a hierarchy. you can achieve this using "set parent"
-- attaching component/behavior to a GameObject, you can achieve this using "Add Component" action, but I don't rely recommend you do this.
typically, if you want to switch on and off an "fsm" logic, you can deactivate the Fsm using "EnableBehavior" or implement the swith in your fsm logic by sending events for example.
if that is still not clear, can you further explain what you are after?
Bye,
Jean