Barnard students can also join extracurricular activities or organizations at Columbia University, while Columbia University students are allowed in most, but not all, Barnard organizations. Barnard's McIntosh Activities Council (commonly known as McAC), named after the first President of Barnard, Millicent McIntosh, organizes various community focused events on campus, such as Big Sub and Midnight Breakfast. McAC is made up of five sub-committees which are the Mosaic committee (formerly known as Multicultural), the Wellness committee, the Network committee, the Community committee, and the Action committee. Each committee has a different focus, such as hosting and publicizing identity and cultural events (Mosaic), having health and wellness related events (Wellness), giving students opportunities to be involved with Alumnae and various professionals (Network), planning events that bring the entire student body together (Community), and planning community service events that give back to the surrounding community (Action).