As we are in the process of shifting from Oracle to Zimbra, I have encountered a particularly annoying preferences problem. In Oracle, I can set my work hours for each day (for most academics work hours vary given the day), but I can't find a way to do this in Zimbra. In Oracle you simply defined the work hours for each day, and all hours outside of these were "grayed out" so other users knew not to schedule you for meetings during those times. Also, this helped people know what your schedule was, if you were working flexible hours. Any help with this will be appreciated. Thanks!