Modifications in Zoo component both back end & front end developer

Hi, I would like to modify the zoo compoent to add some functionality in both frontend and backend. for example inside the app in zoo component in cookbook app i have added the file tab if I replace any file i would like the old file to be archived at the same page at the bootom so that in future people want to download the old file and the new file with show as updates in the fronend like a roller display in the sidebar for rest of them. Is anyone can do this really quicker. Cheers Uma