Note: You can only add new categories using an admin account.
To add new categories all you need to do is:
1. Log into your admin account
2. Click on settings
3. Then account settings
4. Click manage categories
5. Add the desired new category into the box on the left and click add category
Once you have added your new category, you will be able to resolve any cases/incidents into this category and any cases or incidents resolved using that category will be reflected on your dashboard.
Your account has 47 default categories already set up but you can add as many as you like to really customise it for your school's needs.