Work and Vacation Editor
The toolbar provides the means to create and delete calendars:
|Add Calendar||Ctrl+I||Button to create a calendar. The new calendar is appended on the same level as the selected calendar.|
|Add Subcalendar||Ctrl+Shift+I||Button to create child calendar. The new calendar is appended as a child to the currently selected calendar.|
|Delete Selected Calendar||Delete||Deletes the selected calendar.|
Calendar name and time zone can be edited inline as described here.
The state of days and weekdays are edited by selecting the day or days you want to edit and open the context menu. Selecting Work... opens the Edit Work Intervals Dialog.