When we create a particular class and the header does not appear the monitor we want to give the class can be for 3 reasons:
1. The class is not within the monitor's schedule or the days the monitor works at the club.
In this case, go to the tab of the monitor and change the schedule if it is not right.
2. The monitor is already giving another class at the same time.
The monitor is busy and can not give the class. You can check it in the monitors box.
3. The monitor has no indication that it gives such classes.
You should go to the monitor tab and indicate if you can give that type of classes, under the "Skills" section of the monitor.