Are you after changing your home page - i.e. when you open Google Chrome, do you want to change what web page come up ??
If so, read on .... if not, then plzz excuse my mis-interpretation of what you're asking :(
Click on the icon in the top right corner and click on "settings".
Under "appearance" tick the "show home button".
Then click on "change" and type (or copy and paste) your preferred home page web address.
You'll also need to click "on start up" and tick "open a specific page or set of pages" then click on "set pages" and type (or copy and paste) your preferred home page web address. The previous page will still be there, so you need to delete it - there's a cross next to it, to enable you to do this, otherwise it'll open up 2 tabs when you open Google Chrome.