The document scanning facility is provided by VFSGlobal without any extra charges. You can upload your documents at home or you can use the document scanning facility at Gerry's Lahore. No need to make extra copies as it is clearly mentioned on Documents checklist that they don't need multiple copies of similar documents. If all members of the family are using same bank statement then just carry one copy with you (no need to get extra for every person) because your documents will be scanned and returned back to you. They will just submit your printd application along with documents checklist and passport. Rest of the documents will be returned back to you after scanning. Make sure to take printout of document separators with you from vfsglobal website, otherwise you will have to pay 1700 Rs just for those 9 pages Hope you are satisfied:)
Edit: From now onward you have to select Appointment from VFSGlobal website instead of within the application. Also, you need to pay 13.39 pounds for document scanning assistance and you may have to pay extra depending upon available slots (eg premium lounge slots, prime time appointment etc)