To add a new issue type or subtype using an issue:
1- From the Submit or Edit Issue screen, select the “add” link next to ‘Issue Type’ or ‘Subtype.’
2- Enter a name for this ‘Issue Type’ or ‘Subtype’
3- To override alphabetical order in related lists and drop-downs, enter a ‘Display Order.’
4- Click Save.
This window will then close and you will be returned to the Submit or Edit Issue screen, populated with this new issue type.