How to Chair a Model United Nations Committee

A trained chair keeps debate moving, rules consistently, and gives every participant a fair shot at recognition. An untrained chair produces procedural confusion, silent hours, and awards that feel random. What follows covers what chairing an MUN committee demands, from pre-conference preparation to managing procedure and assessing participants for awards. It is based on what effective chair training includes, not on what any specific conference claims it includes.

Training Hours Predict Procedural Consistency

The number of chair training hours a conference requires is a strong predictor of procedural consistency across committees. A conference that mandates 20 hours of training will have chairs who rule on points of order the same way in every room. A conference that asks for four hours will produce chairs who improvise. Participants notice the inconsistency within the first session.

What Training Should Address

Effective training covers rules of procedure, floor presence, and award evaluation. Rules training must drill the specific motions and points used under the conference's chosen procedure, because the chair's role in managing lobbying versus moderating caucuses is fundamentally different. Floor presence training covers voice projection, eye contact, and the ability to maintain control of a room of 60 people without shouting. Award evaluation training must teach chairs how to apply the published rubric consistently. The gap between stated award criteria and actual chair decision-making is wide enough that experienced participants coach newcomers to prioritise speaking time over research quality.

The Participant-To-Chair Ratio

A lower participant-to-chair ratio means more individual attention and feedback. A committee with 40 people and two chairs has a ratio of 20:1. A committee with 80 people and two chairs has a ratio of 40:1. A well-trained chair can manage a larger room better than an untrained one with a small room, but the ratio still matters for the chair's ability to track individual performance across the full event.

THIMUN Procedure Versus Harvard Procedure

The fundamental divide in how MUN is practised globally is between THIMUN and Harvard procedural families. Under THIMUN procedure, participants lobby to merge resolutions before formal debate begins, and the committee votes on a single consensus document. The chair's job is to manage the lobbying period, ensure resolution merger deadlines are met, and guide the committee toward a single output. Under Harvard procedure, debate proceeds through moderated and unmoderated caucuses, multiple competing resolutions are introduced, and the chair manages a permanent speakers list with yields. The chair recognises speakers, enforces speaking time, and makes sure each caucus produces a clear outcome.

Managing The Speakers List

In Harvard procedure, the speakers list is the backbone of debate. Open the list at the start of each topic, add anyone who requests to speak, and close it only when the committee votes to do so. A motion to set speaking time can adjust the default 60 seconds, but resist reducing time below 30 seconds. Participants need enough floor time to develop substantive arguments. In THIMUN procedure, the speakers list is used during formal debate after lobbying, with a default speaking time of 90 seconds and the option to yield the floor.

Moderated Caucus Versus Unmoderated Caucus

A moderated caucus is a debate format where the chair recognises speakers in turn on a specific sub-topic, with a set speaking time per person. An unmoderated caucus is a suspension of formal debate during which participants move freely around the room to negotiate, draft resolutions, and build coalitions. Under Harvard procedure, accept motions for both types of caucus and rule on their duration and topic scope. Under THIMUN procedure, the lobbying period replaces the unmoderated caucus as the primary negotiation window, and moderated caucuses are used for formal debate on the merged resolution.

Points Recognised In All Major Procedures

Every major procedure recognises the same four points. A Point of Order is used when someone believes the chair has violated the rules of procedure. Rule immediately. The ruling is final unless appealed. A Point of Parliamentary Inquiry is used to ask the chair a question about procedure. A Point of Personal Privilege is used when someone cannot hear or see proceedings. A Point of Information is used to ask a speaker a question during debate, though THIMUN procedure limits this to after the speech.

Motion Precedence

Motions have a hierarchy. The motion to adjourn takes precedence over all others. The motion to close debate, which ends substantive discussion and moves to voting, takes precedence over most other motions. Know the precedence order for the specific rules of procedure in use. A participant who motions to close debate at the wrong moment can derail a committee still building consensus.

Speaking Time Enforcement

Enforcing speaking time is one of the chair's most visible duties. Under Harvard procedure, the default is 60 seconds, adjustable by motion. Under THIMUN procedure, the default is 90 seconds. Give a clear warning at 30 seconds. Cut off the speaker at the limit. Consistent enforcement prevents anyone from monopolising floor time and ensures quieter voices have space.

Six Weeks Before

Receive your committee assignment and the participant pack, including the study guide and rules summary. Read the study guide in depth to understand the level of research the conference expects. Review the awards policy and the published rubric for evaluation. Note the award tier granularity: a conference with five award levels spreads recognition more broadly than one with two, which affects how you differentiate participants.

Four Weeks Before

Complete your chair training hours. If the conference does not provide training, request the rules of procedure document and study it until you can recite the motion precedence order from memory. Prepare a procedural script for the first session: the opening announcement, the call for motions, and the process for establishing the speakers list.

Two Weeks Before

Read every position paper submitted. Set aside two hours per 30 participants to read and annotate papers. Note who has researched their country position thoroughly and who has submitted a topic summary instead. Conferences claim chairs read every paper, but at large events chairs often skim them the night before or during the first session. Do not be that chair.

One Week Before

Confirm the committee size cap and the actual number assigned to your committee. If real attendance exceeds the cap, prepare for a larger room than expected. Review the conference's policy on resolution sponsorship and amendment ruling, particularly for your procedure type.

The Night Before The First Session

Rehearse your opening remarks. Confirm the room location, the audio-visual equipment, and the seating arrangement. Know where the crisis update frequency documents are stored if you are chairing a crisis committee.

Every major conference publishes an awards policy with criteria that suggest objective scoring. In practice, awards heavily weight floor presence and chair rapport. The gap between stated criteria and actual outcomes is wide enough that experienced participants coach newcomers to prioritise speaking time over research quality. Your job as chair is to narrow that gap by applying the conference's published rubric consistently across everyone in the room.

Typical weighting, drawn from participant guides, puts diplomatic style and negotiation at 30 to 40 percent, knowledge of topic and country position at 25 to 35 percent, resolution authorship and amendment activity at 20 to 30 percent, and speaking frequency and quality at 10 to 20 percent. These ranges vary by conference. Verify the actual weighting from the secretariat before the first session.

To apply the rubric consistently, keep a running log of performance during each session. Note who speaks in moderated caucus, who leads during unmoderated caucus, and who submits amendments or sponsors resolutions. Review your log after each session and compare it against the rubric categories. At the end of the conference, rank participants within each category before assigning overall awards. This method reduces the influence of chair rapport on the final decision.