Here are the steps that worked for me:
I created a QBI component worksheet with business title and header info, but did not populate with data.
Then at bottom of schedule c (using forms method) there was a section called qbi deduction info. Item k is what qbi component worksheet to you want to link. There are some questions in between in re SSTB (my business is not). The worksheet then filled in and created some other worksheets.
Some surprises along the way: Allowable QBI is reduced by SE insurance medical and 1/2 SE tax - because both of these were adjustments to income on sch 1.
