A planner is a record of long-term activity where the smallest unit of time is one day. A good example of a planner is a holiday planner.
A planner consists of a set of keys, each representing a different kind of activity. A key may be selected and used to add bookings to the planner.
For example, a holiday planner may consist of a set of keys, that each represent a different user. To represent a particular user's holiday, select the key representing that user and then draw the booking onto the planner. For more information, see Overview.