I have a Schedule D Capital Gains and Losses for a long-term capital loss carryover. I get the same deduction for the loss every year. How do I enter this with Turbo?

I have been reporting the $3,000 for a few years and it will continue for a number of years  because the loss was so large.  I don't know how to fill out the forms that keep coming up because I started reporting this a few years ago when I sold the stock.  I used a tax preparer and this is my first time online.  When I look at the Schedule D for the last few years I only fill out line 14,15,16, and 21.  The forms that you provide ask a lot of questions that I don't understand and I think I don't need to do anything with since this is an ongoing loss.