Open the installed Horizon Client and click on "Add Server". Then enter "horizon.htw-berlin.de" in the appropriate field and click "Connect" to confirm. In the subsequent prompt window, you will find information on how to log in to the system. After reading this, click "Accept" to proceed.

Log in on the login screen as described in the previous window.

After logging in, all Horizon pools/virtual PCs assigned to you will be displayed. To establish a connection, simply double-click on the desired entry. The connection will then be automatically established, and you can start working immediately.