...
The configuration screen is only available to JIRA Administrators and System Administrators and allows them to manage the list of available SIL scripts. They can add, configure security and delete scripts or edit the parameters of a runnable SIL script.
To add a script to the runner you must give it a name, description and select an already existing file containing the script.
The gadget also offers the ability to restrict script usage to specific users or groups by choosing a security option:
Public - the script will be available for any user
...