For the “Ask Question to Person” feature you would enter an email address for each entry you want this feature available for (through the Event Channels module on the CMS). Then when a user clicks on the “Ask” icon in the entry in the app it opens up an email draft (with the appropriate event channel title auto-filled in the subject line). The emails then all go to the email address to which you’ve entered.
Within the Event Channels template as well as the Event Channels module on the CMS there will be a field for each session titled “Ask Person Emails”.
*If you are uploading multiple email addresses for the questions to go to, separate each email address with the pipe symbol - |.