Quick Common App ?...must send today!

is it ok if I just send a separate resume and my research stuff, instead of writing the descriptions of my activities in the “additional information” section? I’m part of this internship program, and there is a separate profile of it that I want to send, along with a detailed resume that won’t fit in the additional info space. Shoud I just leave that space completely blank? or add something in it?
thanks

(sorry, I know I posted this already in the Harvard forum, but I thought maybe I would get more responses here)