Robert Brock will head the Santee, S.C. property as part of its transition to the management firm. Santee National Golf Club in Santee, S.C, has selected Mosaic Clubs as its management firm. Developed in 1989, Santee National GC is located off Interstate 95, 30 minutes from Columbia, S.C., and features an 18-hole, 6,858-yard golf course. As…