Want More Business? Lethbridge's Premiere Chapter is accepting new member applications. BNI Windy City meets every Tuesday to increase our Business through direct referrals using a proven and reputable international system. Only one member from each profession/area of expertise can fill a seat in the Chapter which guarantees you success as a member and lets you concentrate on your business growth. The focus of BNI towards learning and commitment is what makes it an amazing part of your marketing plan.