I have been watching the following moment from wwdc (Design dynamic Live Activities): https://developer.apple.com/videos/play/wwdc2023/10194/?time=728
It suggest that you should 'tick' between multiple live activities of your app:
When you want to show multiple sessions for your app going on at once, consider ticking between the display of them to continue to give users an eye on everything that’s going on.
How can I tick between them? More specifically how can I do that when my app is in the background?