The forum, one of a number of developments announced last August, is a response to some members' concerns that fundraisers were not adequately represented by the Fundraising Standards Board.
In response to questionnaires sent out by the self-regulatory body in November, almost 60 members have put themselves forward to sit on the panel.
They were also asked how they thought the forum should be structured and what its function should be.
Alistair McLean, chief executive of the FRSB, told Third Sector the forum would be made up of representatives from an even mix of small, medium and large organisations.
The "new phase of development", announced in August, includes the forum, increased membership fees for larger charities and a reduction of the FRSB's membership target to 2,000 by June 2010.