Considering Maria enjoys to stay in the background, I believe that she should be responsible for reserving the room. With that, I would also have her help Jack in collecting money from local supporters. Since Jack is not only good with money, but a pre-med major as well, I would have him design the curricula as well, considering he will know what he is talking about and set up an organized schedule. I would assign Anna to help design the curricula as well because she is passionate about the STEM topic, and I would also have her teach at the workshop too, since she kickstarted the whole project. Tim would be in charge of advertising since he has a background in graphic design, and he would teach alongside Anna because he is a Biology major, and he has a strong interest in interacting with the public.