Election statement for declaring all rental real estate interests as one activity

How do your attach a statement, under section 469(c)(7)(A), to your return if the taxpayer elects to treat all 16 of their rental units as one real estate activity. The paragraph below came directly from the IRS instructions for Schedule E.  Any help will be greatly appreciated!!

If you qualify as a real estate professional, rental real estate activities in which you materially participated are not passive activities. For purposes of determining whether you materially participated in your rental real estate activities, each interest in rental real estate is a separate activity unless you elect to treat all your interests in rental real estate as one activity. To make this election, attach a statement to your original tax return that declares you are a qualifying taxpayer for the year and you are making the election under section 469(c)(7)(A). The election applies for the year made and all later years in which you are a real estate professional. You can revoke the election only if your facts and circumstances materially change.