After the above actions you will see the Remote Werkplek Login Screen:
Login to the Remote Werkplek using your University (ULCN) account information and you get the Remote Werkplek desktop:
Click on the Self Service SAP folder and then on the Sap Self Service Internet Explorer Icon
After clicking you wil see a window pop-up telling you the Citrix Receiver is Launching. Once this is done the IE window with the Self Service login appears.
Now login using your University (ULCN) account information and you can Self Service away!