Changing the default behavior of BlackBerry devices and the BlackBerry Desktop Software
To change the default behavior of the BlackBerry® devices and BlackBerry® Desktop Software in your organization, you can change the values of IT policy rules in the Default IT policy, or you can create an IT policy, specify values for the IT policy rules, and assign the new IT policy to one or more user accounts or groups.
You cannot add, delete, or change the permitted values for an existing IT policy rule. You can add, delete or change custom IT policy rules that are specific to your organization's environment
When you configure a numeric range to assign to an IT policy rule, users can select any numerical value within the permitted range to change the behavior of the BlackBerry device. Users can select the maximum value that you specify for the IT policy rule, regardless of whether it appears in the numeric range.
If a lock icon is located beside a field on a BlackBerry device, this indicates that an IT policy controls the setting and a user cannot change it.