The Wwise Adventure Game uses a variety of methods to post sounds. Some sounds, like ambiences, are simply posted at game initialization, whereas others await to be triggered by a functionality or mechanic, like playing a "pickup" sound once the player comes close to an item. The sounds posted at game initialization may simply use the Start Trigger On option. However, when it comes to sounds based on a function or mechanic, you can't predict when that action will be triggered and you might need it to trigger several times, which Start will not support. As such, to understand the action-based sounds in the Wwise Adventure Game, you will need to get familiar with a few more Trigger On options.