Numbering sequences: identifiers people can read — Where to set it

A format is a setting of an AutoNumber field, so you set it on that field: Edit fields → the AutoNumber row → the Format box. Type WO-{YYYY}-{####}, and the line underneath shows what the next record will get. Leave it empty and the field keeps handing out plain numbers. The restart policy and the moment a number is allocated sit on the same row. You only need the separate Numbering page for one thing: running several schemes off a single column — PO- and SO- numbering independently, each with its own condition and priority. The field's row links straight to it.