A: Deleting users is not supported as ACME records rely on the user to be in the system. If a user leaves, simply deactivate them so they no longer have access to the system.
See the Adding Users to the ACME Platform user guide for step-by-step instructions on how to deactivate a user.
https://support.acmeticketing.com/solution/articles/33000208027-adding-users-to-the-acme-platform