Business units are parts of your organization that are in charge of certain operations, such as Finance, HR, IT.

Business units usually comprise departments and are associated with a company. By default, the Hierarchy of Segments includes a segment for business units, departments, and vendors, which are companies with the Vendor option selected. With the segment setup, you can allocate expenses to business units, departments, or vendors, or have expense allocations roll up to them. You can configure both departments and companies as part of user management.