Announced: By Nicklaus Cos., that Jack Nicklaus will be reducing his day-to-day role with the business and that partner Howard Milstein will take a more active role as executive chairman, according to a news release Thursday. The business enterprise founded by Nicklaus, 78, an 18-time major champion, includes course design, real estate development and the marketing and licensing of golf products and services. Nicklaus said his health is “excellent” and that he wants to devote more time to other activities, such as his charity work and children’s healthcare. Milstein, who has been affiliated with Nicklaus Cos. since 2007, is chairman of New York Private Bank and Trust. He also owns Miura Golf and GolfLogix and recently purchased Golf Magazine and its website, Golf.com.