World Prime Minister
The party with maximum number of elected candidates should be invited to form the World Government. The leader of that party will be World Prime Minister.
The Prime Minister and his ministerial team of the world Government will cooperate to implement the rights and duties of the world president.
It is not recommended to form the Government with just 50% majority as such a situation leads to fench crossing and breeds corruption. The party with maximum number of candidates and the biggest party may be allowed to constitute the world Government. The tenure of the parliament may be fixed for 10 years.
Removal of World Prime Minister
1/3 members of the ruling party will give a notice to the world president who will assess whether the Prime Minister enjoys the support of majority of the party parliamentarians. If the president is convinced that the PM has lost his / her following then PM will be asked to resign and election will be held to select a new PM.