If you use Versions (File + Versions) to store multiple versions of a document within a single file, then it will only be a matter of time before your document corrupts and you lose all your work. Avoid this feature like the plague - and like Fast Save and Master Documents, which are similarly broken – unless the document is of no importance to you. Taking backups won't necessarily help, because the corruption may creep up on you gradually, and by the time you realise you have a corruption you may have to go back to a very old file to get a clean document.
There are three settings we need to embed in this field. The first is to tell it what kind of numbering we want to do (in this case, “First, Second, Third”), what case we want to use (upper case, title case, etc.), and a switch to tell Microsoft Word to increment the numbers. Click each of these settings as shown below, being sure to click Add to Field after each one: desktop numbering using word