Display Resource Calendar
Use this option will display the activities calendar behind the activity bar in the Gantt chart. The display is similar to the calendar display on the resource chart but is specific to each activity.
If all activities use the same calendar (e.g. the default calendar) the Display Resource Calendar option might not change the activity chart much. However, when activities have different calendars and resource combinations, the option is really useful. Any exceptions for the activity calendar will be shown when the option is enabled.
An activities calendar is determined by any allocated resources and the setting to include the default calendar. When an activity has no resources allocated it will have the default calendar assigned. When a resource is assigned to an activity the calendar will be updated. If the default calendar is always included, the activity will get the combination of the default calendar and the resource calendar. If the default calendar is not always included, the calendar will be updated to the resource calendar. When additional resources are assigned and if the option is set the default calendar, the activity calendar will be the combination of resource calendars.