This is a type of digital timetable, called up via the Internet, which can be used to book unloading times. The time slot management system shows all times, both. In simple steps, with this booking system you can create a poll online and Doodle will clearly and succinctly show each participant the possible times to meet. chance to select 'Ifneedbe' when they evaluate their availability for each slot. Time Slots Booking Calendar is an appointment calendar and online booking system that allows clients to book appointments with you. The time slot calendar is.