SimpleCalendar4 allows to share appointments with other users in your office. Appointments of different users are displayed parallel to get a clearly arranged review. Support of multiple data sources can be used to separate private and business appointments, different project teams, departments, resources....

But SC4 is simple. No additional server-software is needed, no costly administration will be necessary. Ensure that your users have access to shared network folders, and SC4 will be able to store its data.