Normally it is not possible without a Microsoft Exchange server to use Microsoft Outlook together in a network to share these information's and functionality directly in Microsoft Outlook with every rights.
As base, Public Share Folder use here an Outlook data file (PST) for a Public Folder. This programs share not only contacts or dates, it shares the hole Outlook PST file.
Whether it concerns now contacts, dates, functions or post office inbox, a central enterprise further accesses to an Outlook structure is possible with this program.
All co-workers can use the same contacts. Each co-workers can see who has which date or who is busy with which task.