In events, actions do something, such as create an object or go to another layout. They appear to the right of the event.
Actions only affect the instances that met the event's conditions. See How Events Work for more information.
To add an action to an event, click the Add action link that appears beside the event underneath any existing actions. For more information on adding and editing events, see Event Sheet View.
It's possible to place a breakpoint on an action, to pause execution when it is reached. For more information, see breakpoints.