There can be only one designated minister appointed to such position. However, the holder of this ministry position can hold other ministerial position, as the most recent designated Acting Prime Minister, Tzipi Livni, was also Minister of Foreign Affairs. Confusingly, the term is sometimes referred to as 'Vice Prime Minister', though a separate and different Vice Prime Minister role already exists. If the Prime Minister is abroad, the designated minister summons the government to cabinet meetings; if there is no such designated minister, in such event, the government will vote for one.