[otrs] How to hide queues in group "users".

Hi, I am using CustomerGroupSupport and am unable to hide Queues that appear in the "users" group from newly added Customer Users that are added only to groups I have created for them separately. I would like to host multiple departments or clients on the same running version of OTRS but don't want Customer Users to see the queues for other clients while they are in the "New Ticket" screen. Currently the drop-down shows all queues in the "users" group. Is the above a side-effect of having installed demo data to start with or is it normal behaviour for Customer Users to see queues in the group "users" ? OTRS 2.02-01 MySQL 4.0.18-log Apache 2.0.49 RedHat Linux 9 (Shrike) Any advice is appreciated. John.