T776 "Buildings Dispositions' question.

My common-law partner and I sold a (single) rental property that we owned, in 2017. On the T776 'Buildings Dispositions' section of Turbo Tax (download edition) I assume I need to put in the details of the property.  Can anyone confirm that, and tell me the Class#, what figure to put in proceeds (sale price, or sale price less closing costs and legal fees), and what to put in the Personal field?