1. Download iPCU
  2. Download the pre configured template file
  3. Open the template using iPCU
  4. Set you university name in the page "General" (this is optional)
  5. Creation_configuration_1_-_general.png

  6. Open the page "Wifi" - nothing to change under the 'protocol" tab
  7. Creation_configuration_2_-_wifi_-_protocoles.png

  8. Fill in your identifier (user@university) and password in the tab 'authentication'
  9. Creation_configuration_3_-_wifi_-_authentification.png

  10. Export the configuration file
  11. Double click to install
  12. Open network preferences
  13. Connect eduroam

(Created using the invaluable help from https://discussions.apple.com/thread/3198156?start=0&tstart=0)