A generic account is designed for shared use rather than individual access. Several people can log in with the same credentials at the same time, without blocking each other.
Important limitation
AGOA tracks actions at the account level, not per person. This means you won't be able to identify who made a specific change.
How to create a generic account
Enable the Generic Account option when creating a user in the Backoffice. See How to create an AGOA user in the Backoffice for the full steps.
