Migrations will be done department by department as opposed to individuals. Once migrations start for a department there will be a maximum of a 2 week window in which all employees within the deparmtnet will be migrated. Most departments can be migrated within 1 to 2 days.
IT is currently accepting requests for departments to be migrated to Exchange.
Please click the following link to submit your request Cherwell Self Service. In the Mail section select Department Exchange Migration Request.