In order for the user to see different gradebooks that they are associated with they select different class tabs as shown by the yellow pointer in Figure 1 below.
Figure 1: Selecting Different Class Gradebook.
To change the class quarter the user must select the 'Class Choose Quarter' command as shown in Figure 2.
Figure 2: Choose Quarter Path.
After the user selects their desired quarter the gradebook and the system updates to show the classes associated with the given quarter as shown in Figure 3.
Figure 3: Quarter Changed View