"Contacts" are people that you would like your attendees to know about in case they need assistance before or during the event. Their names and contact information are only viewable from the Expo Pass mobile app.
Login with your credentials into the Expo Pass Web Application and choose your event.
In the Details section Login with your credentials into the Expo Pass Web Application and choose the appropriate event.
At the bottom of the section you will see Event Contacts. Click on ADD CONTACTS.
Here you can begin to add the relevant information regarding your other Contacts.
Pro tip: Don't forget to add yourself as Contact, as the Event Owner information is only visible on the Details section of Expo Pass, and your attendees cannot see this information.