The  

 symbol displays next to the items in the 
Non-Preferred Location Rights section to indicate the user, by default, does not have the right at non-preferred locations. 
    
Export Selected Permission  and Export All Permissions buttons– Buttons allow either all defined location level security permissions, or only the selected security items, to be exported to all users in a security group. Only security settings are exported, and not the Preferred/Non-Preferred location settings.