Apply to all sub-zones

Many pages with configuration options in it contain an option called Add to all subzones. This option is used to apply the changes made from the top zone to all sub-zones below it. The sub-zone settings can be independently changed as required.

Some of the pages also have an option name Subzones Restrictions. Having this option turned on ensures that the settings which are applied to all sub-zones cannot be changed at the sub-zones below the parent-zone by the administrators at the sub-zones.