The home page for this credit, by Ben Stanley, stated below, mentions an alternative reqmn't allowing for operable windows. Can someone elaborate on this for me? I can't seem to find this addendum. Thank you.

"Fortunately for multifamily projects, USGBC released an addendum that provides alternative requirements for naturally ventilated residential units. The alternative requirements focus on providing operable windows in each residential unit, and allows teams required by the ASHRAE standard. See the ventilation calculations exercise to learn more about the information that you’ll need to complete this prerequisite."