How to change Infoview Home Page for Usergroups

Hello,

I'm using Crystal Reports Server 2008 in german. I'm looking for a way to change the default Home Page to a different page. (e.g. My Infoview, or a created folder) I know how to configure it when I login a user. I want to configure it for a usergroup without login in each user ones. (Since I use AD-Authentication I don't know the passwords, anyway)