Many dance artists have assumed the role of both choreographer and performer, conceptualizing and creating work as well as interpreting it. The intriguing and prolific Joanna Kotze, who straddles that choreographer-performer line herself, curates "Dancer/ Maker," a program exploring this dual identity. Ms. Kotze has invited Leah Cox, Sarah Lifson and Shelley Senter to present new works, old works and works in progress.