This add-on provides a quick way to manage collection visibility directly from the 3D viewport header or the N-panel, functioning similarly to the classic layer system in earlier versions of Blender. It displays a grid where users can toggle collections by clicking individual cells. The interface uses visual indicators: an empty circle shows that a collection contains objects, while a filled circle denotes the collection containing the active object. It also includes operators to toggle all collections at once, toggle object visibility with a modifier key, and link selected objects to new or existing collections.