Departmental Classroom, ATLAS Supported
Check the table on ATLAS' Find Your Zone Manager page. If your department appears in the leftmost column on this page, click the Submit a ticket! link at the top of that page to reach a form with the heading "Request Desktop & Tech Support" that you can fill out to send information directly to the appropriate zone manager.
The rightmost two columns of this table are the building's zone manager and the zone number. The zone manager can be contacted directly by sending an email to email@example.com, replacing the # with the zone number from the table. ATLAS recommends that the Desktop & Tech Support form be used instead unless direct contact is necessary.
ATLAS' own help desk can be contacted by email at ATLAS@illinois.edu or by phone at 217-333-6300.