Standard notifications that cannot be turned off include the following:
- Adding or removing a task from a user's "To Respond" tasks,
- Mention a user in a task comment, using the "@" sign and selecting them from the available user selector,
- Inviting a user to an event or meeting,
- The user has become the presenter of the meeting point or has ceased to be the presenter of the meeting point.
Additionally, we can turn on/off notifications for the state when:
- The user has been added as a follower of the task (not valid if the user becomes a follower because of the owner or the solver role),
- The user has been removed from task followers (not valid if the user becomes a follower because of the owner or solver role).
