You'll need to check the license file. Find the INCREMENT lines and look for the value of DUP_GROUP. The Duplicate Grouping parameter is optional so it may not be listed. If its missing then the feature doesn't support duplicate grouping. If it is listed then the value will tell you which duplicate groupings are supported. DUP_GROUP=NONE|SITE|[UHDV] U=DUP_USER H=DUP_HOST D=DUP_DISPLAY V=DUP_VENDOR Any combination of UHDV is allowed, and the DUP_MASK is the OR of the combination. For example `DUP_GROUP=UHD' means the duplicate grouping is (DUP_USER|DUP_HOST|DUP_DISPLAY), so a user on the same host and display will have additional uses of a feature not consume additional licenses.