As an Active Roles Administrator there may be a requirement to have the ability to override all users Personal Settings to be based on the Global Settings. These changes would be reflected immediately on the fly.
The ability to target this on an attribute basis if a change is made. Example: The "Maximum Number of object to be shown in search results."
Only this attribute is changed in the PersonalSettings. This functionality could also be used for new users, or if the desire is to make the changes on all existing users.