Log in as an administrator with permission to change the configuration.
Change to the /etc/opt/SUNWics5/cal/config directory.
Save your old ics.conf file by copying and renaming it.
Edit the parameter shown in the following table:
Whether to use the User/Group LDAP server for resource lookup, or the Lookup server.
“yes” – Use the User/Group LDAP server.
“no” – Use the Lookup server. The default is “no”.
Save the file as ics.conf.
Restart Calendar Server.