1. Download the profile file (.mobileconfig) from the following link and double click on it
2. Navigate to System Settings -> General -> Device Management
3. Select "DSHS Köln: Eduroam" and click "install..."
4. As the username enter your DSHS-ID followed by @dshsserver.dshs-koeln.de (e.g. ab1234@dshsserver.dshs-koeln.de)
5. After that enter the password you set for your DSHS-ID and klick "install"
6. Confirm with the admin user of your Mac (this is most likely your local user you use to logon to your Mac device) and klick "OK".
7. Shortly after you have done so eduroam should connect by itself if the network is in reach.