Welcome to Just Answer. I am here to help you resolve your tax and finance concerns. Please feel free to ask anytime you need extra help.
You are only required to complete one Schedule NEC for all the items (combined). I also recommend that, if you intend to mail in the forms, you attach a copy of the year end tax statement from your broker. It will assist in identifying all items and help avoid any processing errors. (This last step is not required, just my own view.)