Use the Select Replacement Calendar dialog box to select the calendar to which you want to reassign a deleted calendar's assignments.
Display Options bar: Click to change your calendars display.
Calendar Name: Lists global, project, or shared resource calendars, depending on your current calendar display type. To sort the display, click the Calendar Name column label.
Default: If your current display is Global Calendars, indicates the default global calendar. To sort the display, click the Default column label.
Select: Reassigns the deleted calendar's assignments to the selected calendar.