availability pattern

A description of availability during the weeks that comprise the teaching year. Availability is expressed across the teaching year by a week pattern that describes the weeks that are available, and expressed during each weekday as the periods that are available. Availability during each weekday can differ in each week of the year. An availability pattern can be associated with a resource, student set, module, activity template, or activity. The availability of an item is a hard constraint. See named availability pattern.