magento customization - Make magento stores of marketplace sellers private and share it privately with friends & family

Project Overview: It is a marketplace where handmade products made by kids in age group of 5 -15 yrs are on sale. As specified by seller on purchase of a product a definite % goes to registered charitable organization as donation from seller. This marketplace is limited to US region only. Requirement: Make magento stores of marketplace sellers private and share it privately with friends & family Deliverable expected: 1. Dummy data setup 2. Complete testing and fully functional code delivery. All code files to be delivered for milestone payment. 3. Entire documentation of customization work - file changes, code changes, database changes 4. Screens as per wireframes shared 5. Regular status update on progress of work 6. Quality code practices build for fast performance There is an existing setup available. Timeline: 2-3 days