ChaShaMa, a nonprofit that provides rehearsal and performance space for performing artists in her family’s buildings near Times Square, and later included visual artists.So far the program has provided spaces to 30,000 artists, put on 1,500 free art workshops and classes in underserved communities, organized 4,000 public art events, partnered with numerous real estate owners and obtained grant money.But during the pandemic, Durst saw a particular need.