The UK's police federations met on Monday to discuss the deployment requirements of the forthcoming summit, which will take place in Co Fermanagh in June.
The Northern Ireland Strategic Lead for Mutual Aid, the Police Federation for England & Wales, the Scottish Police Federation and the Police Federation for Northern Ireland were all in attendance.
The 39th yearly summit of world leaders will take place at the Lough Erne golf resort outside Enniskillen on 17 and 18 June. The decision was announced by Prime Minister David Cameron last November.
A massive security operation will be required when heads of the world's eight richest economies - including US President Barack Obama and Russian President Vladimir Putin - descend upon the five-star hotel for the summit.
The state of the world economy is expected to be the main focus of the annual meet.
The police federations issued a joint statement on Wednesday.
It stated: "The meeting was constructive and went someway to providing assurances required by the Staff Associations. It is fair to state that further clarity is required and this will be sought during future proposed engagement involving both the P.S.N.I. and A.C.P.O. P.O.P.S. [Association of Chief Police Officers Public Order and Public Safety.]
"Proper Risk Assessments need to be prepared and this work is in hand.
"Officers volunteering from GB will require additional training and this is construed as beneficial to officer protection when deployed in Northern Ireland," it continued.