Prior to your event, the conference organizers will provide you with information on accessing the Q&A moderator portal. You may receive an email with instructions on setting up your own login, or receive a shared moderator login and a link to the portal. Alternately, your conference organizers may have a device prepared for you to use in the session room onsite.
Once logged in, select the date of the session you are moderating, then locate the session itself. You will then be able to view and answer submitted questions.
The video below outlines the process for answering questions as a moderator.