IRS 4797 Part 1 Line 2

I need to make an entry on Form 4797 Part 1-Line 2 (table) but using the step by step method I can't seem to find the correct thread which would make an entry there. It seems like I needed to go through the Sale of Business Property but this makes an entry in Form 4797 Part 3 not Part 1.  The portion of Form 4797 (Part 1) I am  speaking of is titled: Sales or Exchanges of Property Used in a Trade or Business and Involuntary Conversions From Other Than Casualty or Theft-Most Property Held More Than 1 Year.  This is were I need to make an entry to adjust the gain in 4797 Part 3 (Line 19).  Steps to get the the location would be helpful.