Use this window to register a Calendar. A work time Calendar is made up of Schedules and optionally a Schedule Exception.
At least one Schedule has to connected to a Calendar to make it work. Schedules cannot be overlapping. All days that are not covered by a schedule, either before / after the first / last schedule date or between different Schedules, is considered as non-work days.
The Schedule Exception describes exceptions from the normal Schedule / Schedules.
A Calendar is then used by other components to describe working hours.
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.