Hi Everyone! I am new to netsuite. We have one site which has files(css/js) located under below path.

Web Site Hosting Files > Live Hosting Files > SSP Applications > NetSuite Inc. - Some name > Development > javascript

Now i need to create staging environment so that any new feature we can test first on staging then apply the changes to production. Any help would be appreciated. like how i can proceed for this. how do we modify existing code.