How can I setup the default webpage after user exit

Please login as administrator, then follow below steps:

1. Click on the "cogwheel" icon;
2. Click on "Group Manager";
3. Then click on the "Main" group, a blue menu will appear;
4.  Click on "Preferences". Find the option: Set default URL to be seen after users exit - it is there where you can set a URL of the client's choice to be directed to when they log out.