It looks like this deleted section was refactored into `CreateConferenceProcess`. However, the Conference user contact does not appear to be getting set (`conference.setContactUser(<id>)`). Is that intentional? 

Also, `Conference` contact info includes name, phone, and email - all values already found in the `User` object. It seems we could remove them from the `Conference` (keeping just the contact user id).

Lastly, it's a little confusing, as well as inconsistent with our field naming conventions, that the `Conference` contact user object field/method name is `ContactUser` whereas the `ConferenceEntity` (and underlying table field) is `contactPersonId`. I think it would be better if field names matched across API object, entity, and backend tables, where possible.