[Zope] Forcing a user to use a session...

Is there a way to force a user into a session when they log in to resource/manage? I'd like to be able to give 'content masters' control of their own areas but without allowing them to change objects live. Then a manager/reviewer could approve the changes and commit the session. Cheers, Jules -- "There should be one-- and preferably only one --obvious way to do it. Although that way may not be obvious at first unless you're Dutch." -- Tim <0.8 wink> Peters