Complex sentence: By renting meeting rooms to the general public (e.g., birthday parties and other community events) the current Indian Act Council envisioned the center as a self-sustaining business, that could generate adequate revenue to pay for the center's operating costs and staffing.
Split into simpler sentences: By renting meeting rooms to the community for special events (e.g., birthday parties and other celebrations), the current Indian Act Council envisioned the center as a self-sustaining business. It planned on the center generating adequate revenue to pay for the center's operating costs and staffing.