To change a ticket status to Waiting Customer, simply reply to the ticket notification email (making sure it goes to the support email address) and include the words waiting customer in the subject. Do not remove the ticket number from the subject.
(Support mailbox redirects it to
waiting.NYGG.LOCAL@email.autotask.net. Workflow rule fires (ATES-NYGG13W) which will auto-set status to waiting customer and also send the ticket contact(s) the note.)