An alert scheme define the order in which a contact will receive an alert (SMS, then Email, then voice, for exemple).
Each contact display of a personnal alert scheme.
The personnal alert scheme configures itself on the form of the contact.
The"Time" option indicate the time before to pass to the other media.
The "Desactivate" option allow to exclude temporary one media of the scheme wihout delete it.
The "Private" option mask the data of a media. Only the owner of these datas will see the content.