The Multi-Lesson screen will make it easier for you to find and view the data that you wish to collect during a Session. The Filter Tree allows you to expand and collapse items in a Curriculum, Category, Subcategory and even the individual Lesson. An example of when this might be useful is if you only want to concentrate on Greetings during a session. You can collapse all other Subcategories so that only Lessons under the Greeting Subcategory are displayed. Furthermore, there is an option to hide the Lesson Tree.