As an event organizer, you have the ability to display what your license holders can or cannot see when they scan a lead.
Go to Registration Form and select Lead Retrieval platform from the dropdown menu.
Click directly on the dropdown box under the Visibility column, or click the check box in the left column. This will reveal visibility options in bold for that particular field. Click the check box next to the bolded words to apply the same visibility preference to all fields.
See the screenshot below: