When you are scrolling through the Classes, there is an icon with three small lines in the top right corner. Clicking those lines will take you to the filter and allow you to sort classes by Duration, Level, Style, and Teacher.
Click the sorting icon in the top right corner of the screen
Select the filter you’d like to set
You will automatically get sent to the classes window. The results of the filter you selected will now be applied.
To filter more than one option at a time repeat steps 1 and 2 for as many filters as you’d like to apply to your search.