Triggers are managed on the Triggers Tab, and here you can set a range of automatic triggers like On Page Load, Time On Page, On Scoll etc. There is also an option to set an Element Selector for manual triggering of your Off Canvas from a button or other trigger.
Outside of this tab, there are also a couple more ways to trigger an Off Canvas. The first one of these is through the use of an Avada Special Menu Item. By adding the Off Canvas Toggle Special menu Item to a menu, you can add a menu link to toggle a specified Off Canvas. See the Avada Special Menu Items doc for more information on this method.
Another way to trigger an Off Canvas is through the use of Dynamic Content. For example, you could add a Button with dynamic content as the Button URL. There are three dynamic content options to use: Toggle Off Canvas, Open Off Canvas, and Close Off Canvas.
And now, you can also trigger an Off Canvas from an Avada Form Submission. With these methods, you have great diversity with how to trigger your off canvas creations. Go wild!