what do you understand by multiple executive system
Operating system
The plural of "chief executive" is "chief executives"
Cabinet
There are different titles for the chief executive. In some countries the chief executive is call president. In many companies, he or she is called the chief executive or chief executive officer.
Individually, chiefs, executives, officers. Collectively, Chief Executive Officers
Chief Executive Officer
The US Government Chief Executive is the President.
The united Kingdom is a Parliamentary system,a system of government where in the ministers of the executive branch are drawn from the legislature, and are accountable to that body, such that the executive and legislative branches are intertwined. In such a system, the head of government is both de facto chief executive and chief legislator.
The President is chief executive of the Executive Branch of the US government.
CEO: Corporate Executive Officer
Chief executive or chief executive officer (CEO).
MayorThe mayor is chief executive of a city.