I've got an Immersive scene that I want to be able to bring additional users into via SharePlay where each user would be able to see (and hopefully interact) with the Immersive scene. How does one implement that?

In Progressive mode, you can turn the digital crown which will reveal your environment by limiting/expanding the field of view of your Immersive scene. I'm trying to create a different sort of behavior where your Immersive scene remains in 360 mode but adjusting a dial (doesn't have to be the crown, it could be an in-app dial/slider) adjusts the transparency of the scene. My users aren't quite satisfied with the native features that help ensure you aren't about to run into a wall or furniture and want a way of quickly adjusting the transparency on the fly. Is that possible?