You can register for one event on one registration form.
If you want to participate in two events, or if you want to add your colleagues, please register on two separate registration forms.

Accompanying Persons can be registered on the separate registration form by using a registration button on the confirmation page after submitting this registration. 
Please note that Accompanying Persons registration is reserved for partners, spouses, and family members of delegates that are attending the European Conference
They are only permitted to participate in the social activities of the European Conferences and not in the sessions.

You can find out more about the Event Directors Summit here.