New events are defined using the CREATE EVENT statement. See Section 12.1.9, “CREATE EVENT Syntax”.

The definition of an existing event can be changed by means of the ALTER EVENT statement. See Section 12.1.2, “ALTER EVENT Syntax”.

When a scheduled event is no longer wanted or needed, it can be deleted from the server by its definer using the DROP EVENT statement. See Section 12.1.18, “DROP EVENT Syntax”. Whether an event persists past the end of its schedule also depends on its ON COMPLETION clause, if it has one. See Section 12.1.9, “CREATE EVENT Syntax”.

An event can be dropped by any user having the EVENT privilege for the database on which the event is defined. See Section 19.4.6, “The Event Scheduler and MySQL Privileges”.