When an LSA member may wish to absent himself from a meeting - 22 January 22, 1975

It should also be understood that a member may wish to absent himself from a meeting at which subjects in which he is personally involved are to be discussed. In such cases he may do so unless the Assembly requires him to be present.  

- The Universal House of Justice  (From a letter dated January 22, 1975 to a National Spiritual Assembly; compilation: Developing Distinctive Baha’i Communities, NSA of USA, 1998 edition)