Choosing 1099's in the payroll tax form selector provided by Aatrix that prints to a 4 part form. 2 part form is available in Sage 50 tax forms.
Choose the 1099 Option prior to opening payroll tax forms
Browse to Reports & Forms > Forms > Tax Forms. In this window you should see all the available 1099's to print such as the 1099 MISC, 1099 INT and newly 1099-NEC.
Please see DocLink: 1099-NEC Filing Forms for use with Sage Checks & Forms(L1096/L99A Laser) for instruction on printing the 1099-NEC to a 2 part pre-printed form.