How can I change a service in my registration (T-shirt size, emergency number, etc.)?

1. Log on to www.mso.swiss to your MSO account
   
   
2. By clicking on "My Account" you will find the "My Events" tab
   
   
3. Select the event you want to make changes
   
   
4. Click on "Edit", under "Services" and change what needs to be changed. Please note that paid services cannot be changed afterwards.

Here you will find your services and you can click on "Edit" to change what you want.

5. Once you have made the desired change(s), don't forget to validate everything by clicking on the button at the bottom right!