Motion work runs on elements: a plate to push in on, an overlay to sit under a title, a loopable puff of smoke, a low grinding hit for the moment a gate opens. Most of them are too small to commission and too specific to find in a library, so they get faked with what is to hand — or the shot gets rebuilt around what exists.
The Layer panel puts generation next to the timeline. Describe the element, pick from what comes back, and drop it onto the layer stack; it arrives as footage in your project, sized to the region it was made for, in one undo step.
What it does in a composition
Generate footage, stills and sound. Video for plates and elements, images for end cards and badges, audio for the hits and textures a sequence needs. Each result is saved to a Layer session, so the composition and the creative behind it stay together.
Edit the layer you have selected. Change it with a prompt, reframe it for a vertical placement, or raise its resolution — without round-tripping through another application.
Keep working where you already are. The panel is a dockable extension: it sits beside the Effect Controls, and generation happens against your Layer workspace rather than on your machine, so a render is not competing with a generation for the same cores.
Where it fits a game team
A launch trailer is mostly elements. A store listing needs the same beats cut vertically. An end card needs a badge that matches the key art. Those are the jobs this panel is for — the supporting material around the shots you have, made in the application the shots are already in.