I’m no expert and have yet to return my lease but I took a look at the form online just thinking I should be aware of what will be required. Looking at the form my guess would be that the name and address of the leasing company to which you returned the car would be proper and n/a for the selling price because it was a lease return and not a sale. Looks like the form is a multipurpose from with not very clear directions. the FAQ are not much help except possibly this is relevant “Can the online NRL application be used if the buyer or seller is a business?
Yes. Start the business name in the last name field and continue into the first name field if necessary.”
Can’t believe no one at your at your leasing company could advise you :\