The Group Secretariat which manages the day-to-day co-ordination of internal administration on Group matters, external engagement and representation on behalf of the Group P&I clubs has just published its annual report - a pdf copy is available here. This summary of the key issues and the activities they have been engaged in includes sanctions legislation, maritime labour convention, cargo liquefaction and wreck removal.
The International Group maintains its own website where it publishes documents, bulletins and commentary on its activities.
The International Group of P&I Clubs exists to arrange collective insurance and reinsurance for P&I Clubs, to represent the views of shipowners and charterers who belong to those Clubs on matters of concern to the shipping industry and to provide a forum for the exchange of information.
Each of the thirteen constituent P&I Clubs is an independent, non-profit making mutual insurance association (or "Club"), providing cover for its shipowner and charterer members against liabilities of their respective businesses. Each Club is controlled by its members through a Board of Directors (or Committee) elected from the membership; the Board (or Committee) retains responsibility for strategic and policy issues but delegates to full-time managers the day-to-day running of the Club.
More explanation can be found via the Group's own website.