The first meeting of InvestDSM, a new nonprofit corporation that will oversee an expanded effort to revitalize Des Moines’ neighborhoods, will be held at 10:30 a.m. Thursday in the Des Moines City Council Chambers at 400 Robert D. Ray Drive. Invest DSM’s board initially includes three Des Moines council members and three Polk County supervisors: supervisors Angela Connolly, Tom Hockensmith and Matt McCoy, and Mayor Frank Cownie and council members Connie Boesen and Chris Coleman. Private citizens will also be appointed, officials have said. Among the board’s responsibilities will be deciding what revitalization programs to launch in four pilot neighborhoods and developing guidelines for those programs.