If your Academy is integrated with ServSafe then your employees are able to attend the respective Courses.
When you complete a Servsafe Course the related certificate should be populated to your account within the next 24 hours upon completion. In case, you don't see it under your account you should probably wait a bit.
Please note also that the completion date on the Certificates reflects the actual date that the course was completed and not the date that this completion was transferred to Schoox.
For more information on how to complete a ServSafe course, please read also: Completing a Servsafe Course