The screen shows the list of existing lesson categories, these lesson categories can be edited or deleted, by selecting the checkbox on the left hand column.

1. ADD : In order to add new lesson category  select the ADD tab on the right hand corner of the screen

Insert the name of the category and click on save

2. DELETE : In order to delete the lesson category, select the lesson by checking the checkbox in the left hand column and click on the tab  DELETE  in the far right hand corner

3. EDIT:  Click on the EDIT button in the right hand column of the table respective to the lesson, this will bring the screen that gives the option to change the lesson category, click on SAVE to save the changes. For example check the lesson category titled "Presentation category" and click on Edit button on the right of the lesson category, this will bring the following screen