If the option to synchronize groups (creating, deleting, renaming, or making membership changes) is enabled, the driver creates a distribution list in GroupWise when the user creates a group in eDirectory and then links the two together. If the group is renamed, the description modified, or users are added or removed to or from the group, the driver synchronizes the changes with the distribution list in GroupWise. This corresponds to similar functionality in the GroupWise snap-ins for ConsoleOne.
The default Placement policy adds the Distribution Lists to the post office specified when the driver is created. If you want the Distributions Lists to be added to a different post office, or various post offices depending on some criteria, you need to change the Placement policy. See Specifying Distribution Lists for more information.
By default, this occurs for all Groups created in eDirectory. You should add rules to the Create policy to limit what Groups (by containment or attribute value) are processed by the driver.