Yes, I was speaking about mysql.user. But you would of course not directly enter values there but use SQL for this (see "create user" in the documentation). Inspecting the user table however is a quick way to see if a user exists with a specific name that is allowed to connect from a specific host.
Of course MySQL Workbench can give you all this information (and more) too. Just open a connection to your server as a root user, then go to Management -> Users and Privileges.
Mike
Mike Lischke, MySQL Developer Tools
Oracle Corporation
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