Access to elements (and all their versions) is controlled with a user/group/others permissions model. Permissions set in this page apply only to elements, shared derived objects, and other VOB objects. This permissions model is applied in the following situations:
In a snapshot view, these permissions apply only when the view interacts with the VOB. For example, these permissions apply when you update the view or when you check out files and directories.
An element is owned by a particular user (initially the user who created the object), and belongs to a particular group. To perform certain Rational ClearCase operations, such as to check out a version of an element, a user must be a member of the same group to which the element belongs.
Changing protections of an element has no effect on its checked-out versions. After you check in the element, your view typically selects the checked-in version, thus making the updated protections appear.
For ClearCase LT, allows the element to be loaded into a snapshot view.