You may submit a ticket, along with the list of usernames or emails and the new information and the date you need it updated. We'll help you make the adjustments as soon as possible, although an early request like a week or two would be ideal. We may not be able to accommodate last-minute urgent needs since we may have a lot of tasks to complete.
Hint: We're in the midst of developing a simple method to update all corporate information. Please be patient.