Go to the top Right corner of your Wattle site and click Turn editing on.
Go to the Administration Tab on the left side of the screen.
Scroll down and click on Grades
When the Grader Report opens select the Tab Setup from the row of Tabs.
(Please note that Setup has replaced the tab which was previously known as Categories and Items)
Scroll down and select Add category
Give the category a name
Choose the method with which you will calculate marks
Click Save changes