Default value: 00:00:00
minTime extra option can be set to define a required starting point in time (hours/minutes) on calendar.
By setting this value, the calendar will adjust its starting hours to this value, hiding all the previous hours from the interface.
When inserting and changing events, it will also automatically validate if starting time of the event is valid.
Usage (on Extra Options field) example:
minTime=09:00:00
minTime automatic validation: