Log on to the encyclopedia you want using the Encyclopedia Client.
Open the user (individual or group).
Select the authorization for the subset:
At the Group Selection or Individual Selection window, select Authorization, Maintain Subset Access.
If you know the model name, enter it in the Name field, and click OK. If you do not know the model name, leave the Name field blank and click OK to display a list of models from which to select.
To grant authorization, select subsets from the Subsets Unauthorized For list and click Grant. To revoke authorization, select subsets from the Subsets Authorized For list and click Revoke. Click OK.