How to make only @mentions cause notifications for mobile users and nothing else with mobile app?

Description

One user told me of a thing which is annoying them with the app and that is that they get some kind of notification for every single message that is written in the rocketchat server and they would rather have only notifications when they are mentioned.

The latter seems to be the default behavior I would expect as the default yet the notification for every single message seems to be the default from what he said. I looked in the admin options but couldn’t see anything related to this. Maybe I just missed it? Is it possible to change that either in admin options of the server or the app?