You can't. Autonumbers don't work that way. They exist for one purpose only:
to provide a (practically guaranteed) unique value that can be used as a
primary key. You can't change how they behave.

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Doug Steele, Microsoft Access MVP
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> Can I set how the sequence of AutoNumbering to change with
> the year example: 04-001, 04-002, 04-003 etc.?
>
> Also is there a way to have the database alert me to when
> there are monthly duties due like in Outlook with the
> calendar?