Works with any number of monitors, with any mix of resolution and scaling, and with the standard notifications that slide in above the clock and also appear in the notification centre.
Can't move notifications Windows holds back. With Do not disturb on, or while you play fullscreen, Windows doesn't pop them up at all, so there's nothing to move. When several arrive at once, Windows pops up only the first.
The app names on this page are examples. Whether an app's notifications can be moved depends on whether it uses standard Windows notifications. The Free version is enough to check: send yourself one and see.