I tried to change this option, but I’m not sure I understand its function. Does it give you access to more choices in the notification preferences?
The « Windows popup back end » was already activated.
I tried to change my notification preferences and only the Egroupware popup triggers something. Here are the screenshots I made:
Egroupware Popup :
Egroupware and Windows Popup :
Windows Popup :
Notification result only with Egroupware popup :