I figured out how to set up widgets on the AOD and lock screen easily enough, but it took me a couple of days to realize I was no longer seeing notifications on these screens. I suppose they were actually there, but OneUI 7 defaults to showing them as tiny notification icons at the very top like those that appear on the home screen. To change it back to appearing as larger icons under the floating clock and widgets, go to Settings/Notifications/ Lock Screen Notifications and change the Style to Cards.  I didn't see anyone asking about this yet on the S22 board (or complaining about how much they hate the change) so I thought I'd drop it here proactively. Or maybe everyone else just searched for the info like I did and already figured it out. Cheers.