If you are designated as a collaboration administrator, you may add security zones to a collaboration.
To add a security zone to a collaboration, bring up the the Unity interface (see Displaying The Unity Interface). Then expand the "Collaborations" node, expand your collaboration node, expand the "Security Zones" node, right-click on your security zone node to bring up the security zone context menu, and click "Add Member".
You must be a collaboration administrator add members to security zones. If you are missing this option, ask your administrator to give you administrator privilege for the collaboration.
Choose a collaboration member to add to the security zone, and click "Add".