Returns the intersection of two collections as a new collection.
object expression.Intersect (Object)
object expression Required. An object expression that evaluates to an object in the Applies To list.
Object Required. Either a Group or Region object.
The following example creates a new Group called "MembersInBoth" which is formed by the intersection of two other Group objects.
Set MembersInBoth = GroupA.Intersect (GroupB)