As an item makes a transition from state to state, you might want to specify conditions that validate whether the transition can occur or cause other commands to be executed. For example, when someone resolves a certain type of issue, you might want the person who opened the issue to be notified by e-mail. Your workflow can accomplish this through actions you specify for the states.
Certain actions are displayed automatically as transitions. For example, when you add an OnCreate action for a state, a transition from the starting block to that state is created. Likewise, when you create an OnDelete action for a state, a transition from that state to the ending block is created. For all other transitions, you must select the transition action and designate the next state.
To add a transition action