This policy setting controls whether Outlook executes scripts that are associated with custom forms or folder home pages ...

This policy setting controls whether Outlook executes scripts that are associated with custom forms or folder home pages for public folders. 

If you enable this policy setting, Outlook cannot execute any scripts associated with public folders, overriding any configuration changes on users' computers. 

If you disable or do not configurethis policy setting Outlook will automatically run any scripts associated with custom forms or folder home pages for public folders.