Customize Prestashop Multivendor Module -- 2

Gran Panyen is an eCommerce platform that allows customers to reserve a product online and pick it up instore. Vendors have the ability to upload their products and info and location to allow customers the ability to see where they are located to come pick up their products. The project is to add the features bellow in this Marketplace/Multivendor module: [login to view URL] Please try the Backend and Frontend Office Demo to accustomed yourself to the module. How I would like to customize the Module: -> Add the "selling by" underneath the product, instead of its bottom right (present situation). ->Add the name, address, phone and email of the store included in the "selling by." so all these info can be shown to the customer while looking at the product. -> - Integrate a google map in the info of the vendor to allow the customer to visualize the address where s/he is going to pick up that product. => This is the actual visual representation: [login to view URL] => This is how I would like it to look: [login to view URL] -> Add the info (name, address and contact info) of the vendor in the receipt, including the google map. => The representation should be something like this: [login to view URL] -> Add the vendor's info and google map location in the "Shipping Section" during the checkout. For instance, when a customer chooses "pickup in-store" as their shipping choice, all the info of the vendor including the google map location should be shown there. The store/vendor's info will be automatically linked to the shipping section. That will allow customers to see the info and location of the store to pick up their products. => Here is the visual representation: [login to view URL] Please let me know! Sincerely, Gran Panyen