You can pick the Apps with Dynamic Island that can activate DynamicSpot. Music apps like Spotify, YouTube Music, Audible, and others are good choices. You can also include messaging apps if you want. It's pretty straightforward, but the real power of Dynamic Island shines when you long-press on it. When you have two apps using Dynamic Island simultaneously, like music and a timer in the Clock app, the Island will display animations for both tasks. The timer will be shown as a small animation on the right side. You can interact with either app using the same tap or long-press action.