Vice president Joseph Akafumba unveiled Kambwili at a press briefing and also announced the appointment of Bridget Atanga as general secretary taking over from the dismissed Mwenya Musenge.
Political activist and artiste Saboi Imboela has been appointed as party spokesperson.
Akafumba said the party Central Committee had decided to elevate Kambwili to the presidency after being consultant since the party’s founding.
“Our Secretary General is Ms Bridget Atanga, Mwenye Musenge has been moved to the position of member of Central Committee or indeed chairman of Chiefs and Traditional Affairs,” Kambwili said.
Other appointments include newly elected Roan Member of Parliament Joseph Chishala as member of the Central Committee in charge of labour, Misheck Moyo joins the Central committee in charge of information and broadcasting and a Mr Kaonga moved from Tourism to Agriculture.
Meanwhile Ackson Simwizya has been removed from the Central committee.