Does the requirement to use ConnexUC apply to student and/or guest travelers?

Only UC Berkeley employees are required to book their airfare through ConnexUC using Direct Bill. For non-employees needing UC business travel, a UC Berkeley employee can book travel on their behalf through ConnexUC and Direct Bill using the 'guest' option. This eliminates the need for the traveler to pay out-of-pocket and wait for reimbursement until after the completion of travel.