Hello there, Mark 1808.

As of the moment, what my colleague mentioned above that the 1099 NEC form with 3 parts is not yet available. Currently, we don't have the specific time-frame as to when will be the completion of printing the 3-page 1099-NEC forms in QBDT. Rest assured that will keep you up to date via email or in-product notifications with its availability.

Right now, we can only print two 1099 forms per page in QuickBooks. It would be convenient if you could print three forms per page. Here's an article for more details about printing 1099 forms: Set up and print 1099s (Mac). 

You can always, refer to article for more insights about printing forms in QuickBooks Online: Learn how to print 1099-NEC or 1099-MISC forms.

Stray in touch with us if you need further assistance in printing your 1099 form. We're always here to help.