Assuming you have the correct "sudo" permissions on plato, execute:

`sudo trac-admin /wynton/group/ferrin/usr.local/share/Trac/projects/ChimeraX session add ` ''account-name real-name email''

If possible please use the bundle name (lowercase, omit spaces) for the ''account-name'' so that it is easy to assign Trac tickets to the appropriate account without the need to look up the account name associated with a bundle.