How to Add an Admin:
Login to Security Journey and navigate to More > Admins. Using the box in the top right that displays: "Mark and existing user as an admin." Start typing in the email address or name of the user you wish to promote.
When the user's name appears, select the blue 'INVITE' button:
Finally, you should now be able to find the new admin in the list and click the "APPROVE" button to send them a notification.