Form 4797 - Sale of Rental Property. How do I enter sales price $225,000 - Land $18,355.32, Building $206,644.68 and override whats already calculated by Turbo Tax?

I can’t figure how to enter land in Section 1 and building in Section III.  Turbo tax has already calculated in Part III based on total sales price not just the building and I know this is not correct.  I have tried over and over to override but unable.  Can someone tell me how to fix this?  Thanks.