Sheldon Ohringer, CEO of Caleris, a business process-outsourcing provider, will be the speaker at the Nov. 20 Business Innovation Zone luncheon. Ohringer will speak on his experiences of leading companies through high-growth stages. The event will take place from 11:30 a.m. to 1 p.m. at the Greater Des Moines Partnership, 700 Grand Ave. Registration is $15, and can be done online.