Guide

1. Go to the Jira Administration page by clicking on the gear icon in the top-right corner.

2. Select 'Issues' under the 'Jira settings'.

3. In the left-hand sidebar, under 'Fields', click on 'Custom fields'.

4. Click on the 'Create custom field' button.

5. Choose the field type. For severity, such as Single choice or Radio buttons.

6. Click 'Next'.

7. Enter the name of the field.

8. Add a description.

9. Add options for the severity levels by clicking 'Add'.

10. Click 'Create'.

11. Associate the field with the relevant screens by checking the screen's box.

12. After selecting the screens where you want the severity field to be available, click 'Update'.

13. Now, whenever you create, edit, or view an issue in your project, you will see the 'Severity' field, allowing you to categorize issues based on their severity.