[Zope] Secure testarea

hi I'm working on a website which should be online soon. Before we go online, we want to test the site. That's why we invited some people to test all the stuff for us. The site is built up like this: root folder - homepage_dir -- subdirs --- subdirs ... The index_html in the root folder should be displayed for all visitors, but the content in the homepage_dir (and subdirs) have to be password protected. How can I do this? Do I have to set the security permissions for every single file? I hope you understood my question :] regards Simon