Copy function related products from one store to other in magento multistore

Hi, We had a developer create a feature on one or our websites in our multistore. Please see the feature in the attachment. It's only installed in one template map, we also want it in the other map (new site) 1. It's installed on: [login to view URL] 2. We want it installed on: [login to view URL] This is a multistore (one FTP) so its a matter of copying some files and css from app/design/frontend/template to app/design/frontend/template2 Can someone fix this for us? Please remember to write down every step or/and change you have made. We will put it on the live website (this is development site) Thank you in advance.