This script takes the first AD logged in user and adds them as an administrator. It will check
the current user and if they are an AD user it will then check the Admin group to see if there
is an Admin of this name, it will also check if there is another AD user currently set as an
Admin. If not the script adds the current user to the Admin group.
How to use this script
Use as a login process via login hooks via Jamf policy and limit the frequency as you see fit.