It is possible to allow other people to upload and manage
pictures/descriptions. In admin interface, select "Add an co-administrator"
and fill informations (user name and password). Then, you need to communicate
-to your user its username and password. Only admin can add new users.
+to your user its username and password. He/She will be able to modify this
+password afterward. Only admin can add new users.
Other co-administrators will be able to add markers, and delete/modifiy them.
They cannot modify markers they have not created. admin is the only user