To change the security settings for a filed email, in the Filing Details pane, select View Security Details. Perform the following tasks, and select Save:
Select the Default Security drop-down button and select Public, Private, or View Only. This setting applies to all users/groups except the ones you to whom you grant different privileges using the Add Users/Groups feature.
Select Add Users/Groups to search for users and groups and grant them security access that is different from the default security settings. The list of users/groups you add is displayed below the button. The drop-down menu next to each name allows you to set Full Access, Read Only, Read/Write, No Access, or Remove permissions.
Select to return to the Filing Details pane.