It is possible to remove an unwanted personal calendar that has been set up previously. The current calendars are listed on the right hand side of the Calendars tab, right-clicking on the calendar that you wish to remove will open an options menu. Selecting "Delete" from this menu will open a prompt asking if you are sure you wish to remove the calendar completely, selecting "Yes" will remove the calendar completely with all appointments.
Calendar delete dialogue box
Calendar delete conformation box
You can remove an unwanted calendar from Webmail Lite by using the following steps:
Open the Calendars section, and selecting the "edit" option next to the calendar heading in the top left hand corner.
In the new page, select the unwanted calendar and tick the box listed "Permanently delete this calendar. This operation cannot be undone. "
Click the Delete Calendar button to permanently remove the calendar and the appointments within it.