This window is used to get an overview over all registered Calendars. In the Calendars window you can also register Calendar headers. You can also create a new Calendar in the Calendar window, where you handle the details of a Calendar. You can go from the Calendars window to the Calendar detail window via the right mouse button
When a calendar is defined, it has to be generated to work properly. This is done via a right mouse button on the header. The calendar generation is done as a background job and can be monitored in General / Background Jobs. Only one Calendar can be generated at a time. If the generation is successful, the state of the Calendar is set to Generated. Please note that a calendar generation affects the components that are using that calendar. This might have a huge impact on stored data and should be done with real care.
To explore the result of the calendar generation you use right mouse button Generated Calendar Analysis.