Hello Jafar,
we are using common view phtml files for product view
you should go to the folder “app/design/frontend/ves_bigmart/default/template/common/view/” – for now it have default.phtml
Each view layout have default.phtml and default/media.phtml .you can extend and make more product view layout as you want
– Duplicate file and folde default in common view
– To change layout for product view you should go to ves tempcp in admin (config ves template panel) in Layout Settings tab > Choose Product view layout (the dropdown list at here auto get file name in common/view folder)