I don’t how to set these via the Openfire Admin interface, I haven’t found anything. (only the latter can be set with “Show Real JIDs of Occupants to” option)
This probably configures, the “muc#roomconfig_whois” field. That is, if it is a anonymous or semi-anonymous room., i.e. if the jid attribute is included for a member.
What you are looking for is “muc#roomconfig_getmemberlist”, which doesn’t seem to be exposed via the Admin interface.
I don’t know if Openfire supports it via XMPP room configuration.
EDIT: From looking through the source this option isn’t available in Openfire. (it was added to MUC spec 1.23 in 2008)