1.   The post rotates between the U.K. and U.S. chairmen every two years.

2.   Brazil has offered its candidacy, but Argentina, Mexico and others have suggested the post rotate within the region.

3.   Cabinet members are elected without a fixed term, and the largely ceremonial post of president rotates between them on an annual basis.

4.   The commanding posts will rotate every three years between the nationals of the two countries.

5.   The largely ceremonial post of presidency rotates annually between the seven-member cabinet.

6.   The post rotates monthly.

7.   The post will rotate between the two every week.