I’d like to hide contribribution material such as talk slides from the general public, but show them to the authors and conference registrants. Is there such an option in the indico setting, without modifying the indico codes?
You can do that individually for the material on each contribution by enabling “Protected” and then adding registrants from your event’s registration form to the ACL.
There is no way to do that globally for the whole event.
I appreciate a lot that you have responded to my inquiry promptly.