I'm Paul from neo WP and we recently released neo Alt.

The Generate button itself was easy. Bulk generation was more annoying.

If four images are processing same time, one can finish earlier, one can fail, user can cancel in middle, and still the UI should not become nonsense. We ended up using separate operation states for rows and bulk actions.

Probably no user will care about this, which is good.

Video attached shows only the simple side.