Different resources for different cells of the same activity
As you know, each activity can include multiple resources of the same type. The default type of inclusion is "All" - meaning that all the selected resources will be scheduled whenever the activity is scheduled. However, there are two additional types of inclusion. "Any" - meaning that any of the selected resources can be scheduled in any of the activity's cells. For example, If you select several rooms for an activity and select the "Any" inclusion type, each cell of the activity can have a different room (remember that if you leave the default "All" inclusion, all the selected rooms will be booked when the activity is scheduled). Another option is the "One" inclusion. It means that exactly one resource out of the selected resources is to be used for the activity, and only that resource will be scheduled whenever the activity is scheduled. For example, if you select several optional instructors for an activity and use the "One" inclusion, selecting a chosen instructor out of these optional instructor schedules that exact one instructor in all the occurrences of the activity.