The 99 member group is being chaired by Ms Justice Mary Laffoy
The Citizens' Assembly is meeting this weekend to talk about how referendums are held in Ireland.
The 99 member group will make recommendations on "the manner in which referenda are held".
They are meeting at the Grand Hotel Malahide in Dublin on Saturday and Sunday.
It is being chaired by Ms Justice Mary Laffoy and is taking presentations from several experts on the issue.
Professor Gary Murphy from DCU gave a briefing on the history and outcomes to date of referendums in Ireland.
On Sunday, members will vote by secret ballot on the recommendations they want to make to the Houses of the Oireachtas.
Their conclusions will then form the basis of a report to be submitted for debate by elected representatives.
A full agenda for the meeting will be available later this week.