Navigate to mcommunity.umich.edu and select Log In in the upper-right corner (if you are not already logged in). You can either type the name of the list in the search box, or click My Groups (for this example we are using a list called "My Departmental List"):
or
Once you have found your group, click the Settings tab:
To make it so that people cannot join the list, select Owners must add members. This will make it so membership in the list is controlled only by list owners.
To prevent people from obtaining a list of members in your list and thereby creating their own shadow list, ensure that the value Members list is viewable by is set to Only members:
