Sears, Roebuck and Co CEO Alan Lacy plans to move the venerable department store chain into a brand new niche – one that has proved very successful for rival Kohl's Corp, Cjhicago Business reported. He plans to convert the retailer's mall-based stores to a 'self-help' format – which will cut down on sales staff – 'open stock' displays and fewer checkout counters, Mr Lacy told analysts at a conference late in July.