The notification center is located in the upper right corner of your screen, next to the customizable pins.
This notification center lets you list notifications received and mark them as viewed.
Once you have clicked on the notification, it is considered read.
You can go directly to the item you've been notified about, such as a task .
Clear all allows you to completely clear the notification center.
All notifications will then be deleted, and it will not be possible to display them again.
You can set up your notifications easily from your profile 
Manage my notifications
No rights are required to modify notifications.
Notification settings are user-specific.
By default, e-mail notifications are disabled.
