First step: Go to "Grade Center" and "Full Grade Center"
Once you are in the Grade Center and have located the item that you want to change the category to, click the arrow beside the item, and click edit.
Scroll down and look for "Category" and click the arrow to change category.
After you choose the category you would like, click "Submit" located at top right or bottom right.
**NOTE: If you do not click submit, your changes will not be saved.