Complex sentence: In 1970 McQueeney met Harrison Ford and began to work as his personal manager; in 1973 she launched her own agency, which represented many rising Hollywood stars, including Teri Garr, Mackenzie Phillips, Cindy Williams, and Candy Clark.
Split into simpler sentences: In 1970 McQueeney met Harrison Ford and began to work for him, first as his agent and later also as his personal manager. In 1973 she launched her own agency, which represented many rising Hollywood stars, including Teri Garr, Mackenzie Phillips, Cindy Williams, and Candy Clark.