YW!
As you can see, I’ve 5 listed apps I can mute, so it’s possible to control individual apps here.
So I guess you’d ask the developer for adding the app as timeline category, instead of just sending notifications using the common ‘apps’ category.
I think that’s not possible. For this you should check with the app developer, maybe he/she can limit some (kind of) notifications.
This is standard Homey alert. Batteries getting less than 20% will generate a notification, AFAIK app developers have no control over this.
However, you can mute notifications of the Energy category for ALL battery levels, but then you’ll have to create flows or use a script to alert for other low battery levels from which you’d like to see alerts.
Of course for Home batteries, lawn mowers, robovacs → i.o.w. all rechargeable machines, it should be possible to mute the buiod-in lowbat notifications by the user, or to set the threshold, like 0%
