Deductions & credits

How can these election be made on sale of business property for a real estate professional? I can not find how to manipulate the software to elect to wave the NIIT for the sale of my rental property, which as a real estate professional I am exempt from the NIIT on the gain of that business asset. And yes the properties info already shows I am a real estate professional, I materially participated, etc. Still no luck in removing the NIIT associated with it.