Mr Thongthong said a summary of yesterday's forum at the Queen Sirikit National Convention Centre had been forwarded to caretaker Prime Minister Yingluck Shinawatra.
He said most of those who attended the Sunday forum agreed the elections should be held as scheduled on Feb 2.
For continuity, another forum would be held tomorrow, attended by academics and representatives of seven business organisations. The venue would be announced later.
Mr Thongthong said he would try to contact the People's Democratic Reform Committee (PDRC) and the Democrat Party and invite them to send their representatives to attend this round of talks. He said he hoped they would cooperate.