Aung Min, representing the government in ceasefire negotiations, urged political parties and ethnic armed groups to select representatives to make up the Union Political Dialogue Joint Committee to lead the political dialogue.
Representatives of the government and political parties met at the Myanmar Peace Centre in Yangon on Thursday to discuss the committee's membership.
The government and eight ethnic armed groups signed the nationwide ceasefire agreement on October 15 and are now in the process of setting up the joint committee to push the process forward.
The government and armed groups must appoint 16 committee members each for the joint committee.
"We need to start political dialogues to establish a nation based on federal democracy. We need to organise the dialogue committee in time to hold political talks within 90 days and establish a political framework within 60 days of signing the ceasefire," said Aung Min.
"We are determined to not violate the agreement. We will lay the foundations for the next government. So I am urging the delegates of all political parties to choose their representatives as quickly as possible."
Observers say the deadlines of December 15 for the political framework and January 15 for the political talks might well be missed.
Only eight out of 22 armed groups signed the ceasefire and Khun Myint Tun, chairman of Pao National Liberation Army said it would only be a success if other groups signed up.
The government invited 91 political parties, including the National League for Democracy, to attend the meeting.