Selecting Scenes
When you click once on the scene thumbnail, it is activated and highlighted by a blue
frame. The viewport then displays the currently active Scene until you start
navigating so that the camera of the viewport takes over.
To access some of the actions available in the top bar of the panel, you need to use
a different way of selecting scenes: By checking at least one scene in the
upper-right corner of its thumbnail. Scenes selected in this way are indicated by a
smaller thumbnail and a blue check icon .