How to use limitless cascading level select
Create custom field
After installing the app from the Atlassian:
Navigate to Jira Settings > Issues > Custom fields
Click on Create custom field
Search for Limitless-cascading-level-select
4. Click on Next
5. Enter a name for the field and click on Create
6. Select the screens where the custom field shall be visible
7. Click on Update to finalize the process
Configuration