Chances are you have. Leaders who don't plan for real participation won't get it, no matter what they say they want. It's a good setup - if you want to discourage participation.
Actions do speak louder than words.
Applying this maxim to meeting management requires that you take careful stock of your meeting room and where people will sit. Physical, nonverbal messages often send a much louder message than spoken words. There are ways to deliberately convey nonverbal messages. The most confrontational position you can assume is to stand or sit directly across from another. You can increase or decrease feelings of confrontation by purposely choosing where to sit in relation to the confronter.