You need to be able to log in to fcdfnis00.fnal.gov. When a user is added as a group manager, they are supposed to be granted permission. So if it's not working, you'll have to open a ticket with the Helpdesk to get it fixed, or reopen the old one explaining the problem.

• Get yourself a ticket (kinit), and ssh to the machine: ssh -l username fcdfnis00.fnal.gov
• Unsetup your current UPS/UPD environment:
  1. (sh) unset PRODUCTS
  2. (csh) unsetenv PRODUCTS
• Setup UPS, if it is not already when you log in. Source one of the scripts in /usr/local/etc/:
  1. (sh) . /usr/local/etc/setups.sh
  2. (csh) source /usr/local/etc/setups.csh
• Then setup systools: setup systools
• You can now run the available group management commands:
  1. addmember - add a member to a group
  2. delmember - delete someone
  3. grpmembers - list members of a specified group
• To run one of these commands, use 'cmd':
  1. cmd addmember bob
  2. cmd delmember bob
  3. cmd grpmembers bobsgroup
• If no errors were returned, everything should be working now. If not, you may need to open a helpdesk ticket.

If you need to add or remove a group manager, you will need to open a helpdesk ticket. Send mail to helpdesk@fnal.gov, ask them to direct the query to the REX group, and give a list of who should be added/removed as managers of which groups. Note that such changes are going to be subject to authorization, so if you want to save time you should forward you r request to someone who can do this, and have them submit the helpdesk ticket.