CATS webdynpro

Hi Experts,

I am new to Webdynpro my basic requirement is to add a new column in the time sheet entry screen

I have imported the ESS development track into my NWDS and I created a new project for ess~cats dc and now and I dont know the process from here , which file I need to edit, can somebody suggest what files /views I need to modify to add a new column

RAD