You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
The Head of State of a country is usually one person. Other than Switzerland and a brief period of Uruguayan history, countries have tended to have a single occupant in the office.
With a POD after the 1848 Swiss Constitution, your challenge is to make the plural executive more widespread.