This it where you would add at Tax Class.  For Example if you sell food and regular taxable products, you would add a food tax class and a taxable products tax.

How To Add a Tax Class
1.  Click on the "New Tax Class" button
2.  Enter in a Tax Class Title and Tax Class Description
3.  Click on the "Insert" button to add the class

How To Edit a Tax Class
1.  Click on the class you want to edit
2.  Click on the "Edit" button
3.  Make your changes
4.  Click on the "Update" button to update the class

How To Delete a Tax Class
1.  Click on the class you want to delete
2.  Click on the "delete" button
3.  Click on the "delete" button again