Abstract: An affiliation manager provides each of typically hundreds of users with a calendar of appointments and a task list each including icons for capturing time and expenses accrued by the user when attending a particular appointment or performing a particular task. A subset of collected captured time and expenses may be transferred to each requesting client for use by independent accounting systems. Management of appointments and tasks from a central database promotes collaboration among users, simplifies sharing of schedule information among users, and provides context for data entry. Each user may create any number of affiliations, each affiliation describing affiliations of the user in numerous projects, organizations, employments, and activities. Each user may admit other users to share his or her affiliations, thereby promoting collaboration of many users for jointly attending meetings and jointly performing tasks.