Line and staff organization structures separate line functions, which have authority over goals and operations, from staff functions that provide advisory expertise. In a line organization, authority flows vertically from top management to separate department heads. A line and staff organization introduces staff roles to advise line managers on specialized activities like purchasing, production, sales, and finances. This provides opportunities for rational, multidimensional problem solving but can also cause conflicts if line and staff disagree or if line managers misinterpret staff advice.