The main responsibility of a coordinator is to ensure the smooth operation of an office or project. This involves coordinating small teams and projects, working with the management team, and reporting any issues. Specific tasks include following office workflow procedures, maintaining files and records, supporting other teams with administrative tasks, greeting and assisting visitors, monitoring office expenditures, performing basic bookkeeping activities, dealing with customer complaints, monitoring office supplies inventory, assisting in vendor relationship management, keeping records up to date, supervising staff members, maintaining budgets, handling general office duties, scheduling training events, and communicating information from executives to employees.