Expertise · Who needs to be in the same room

Invite representatives or invite all relevant parties.

The question is not about inviting few or many people, but about who is in the room to finalize the meeting.

Quick summary

For large organizations, invite true authoritative representatives from each party, not the entire group. Mandatory conditions: each representative must be recognized by their group, have the authority to make decisions on behalf of their group, and be responsible for communicating back after the meeting. If a representative does not meet all three conditions, decisions made in the room will fall apart as soon as they leave.

Quick comparison
You should choose this direction when
  • organizing meetings, decisions involving representatives from each department
  • Decisions impact a specific group: ensuring that group has a true representative.
  • Compare benefits and essentials: it can be comprehensive if it remains within the group's threshold.
Not needed when.
  • choose representatives based on job titles; those individuals do not convince the team.
  • representative without a mandate, everything is left for me to follow up

This question arises in most brand projects involving two or more departments. The answer does not depend on the feeling of "who should know this" but on a single criterion: can this meeting reach a conclusion? If there are too many people in the room without anyone being given sufficient authority, the meeting will drag on, opinions will be scattered, and the result will be a vague consensus where everyone goes home and disagrees.

Why should we not invite everyone?

Research on decision-making group structures shows that overly large groups lose the ability to converge. J. Richard Hackman's two-pizza rule sets the group size threshold at what can be fed with two pizzas, roughly five to seven people. Exceeding that threshold means each additional opinion does not add quality but only increases processing time and the number of compromises.

In the context of brand consulting, the practical outcome is: a two-hour meeting that results in no decisions that can be documented as an action plan. Everyone leaves the room feeling like "we had a meeting," but no one is clear on what the next steps are or who is responsible.

A valid representative needs three things all three

Inviting representatives does not mean inviting the highest-ranking person available. According to Beyond Intractability's stakeholder analysis framework, a representative is only valid if they meet three specific conditions.

  • Recognized by your team: the team at home truly sees that person as their voice, not just someone sent by a superior.
  • Is there a real mandate: authorized to finalize decisions, not just to take notes and ask later. This mandate needs to be clearly stated verbally before the meeting, not assumed.
  • Has a responsibility for two-way communication: bringing your team's voice into the room, and bringing decisions back to explain to your team afterward.

Missing one of the three, that representative is merely an attendee. Decisions made in the room will not be recognized by the remote team.

Use a power and interest map to assign seats.

Aubrey Mendelow suggests mapping stakeholders on a two-axis grid: power (the ability to influence decisions) and interest (the degree of being affected by outcomes). This grid helps identify who needs to be in the decision room, who should be consulted beforehand, and who should be informed afterward.

In the decision room: parties with high power and high interest, meaning those who can block decisions and are directly affected. Each party has one representative with a mandate.

No entry into the final decision room: Parties with high interest but lower power, or vice versa. These parties participate through a separate feedback round before the final decision or receive results through their representatives after the meeting.

Common mistakes when choosing representatives

  • Choose by title, not by mandate: The person with the most impressive business card may not be the one your team empowers to make decisions. At home, they may struggle to persuade others, leading to overturned decisions.
  • Representative only to "let me check back": all important points are left hanging, and nothing is concluded in the meeting. This is a sign that the mandate has not been clearly defined beforehand.
  • Overlook affected parties: They may not have a seat at the table, not be consulted, but when implemented, they are the ones executing. Resistance from this group is often the reason projects slow down without anyone understanding why.

How Sinh Vũ handles large organizations

When clients have multiple departments or stakeholders, Sinh Vũ suggests a two-layer structure instead of a single session with everyone.

A small decision-making loop. A broad feedback loop to ensure representatives have materials before entering the room and content to take back afterward.

Practical experience of Sinh Vũ

In the preparation phase, Sinh Vũ clarifies with each representative: what they are allowed to finalize, and what needs to be reported back before a final decision is made. Clarifying this before the meeting takes about fifteen minutes. Without this clarification, the meeting could drag on indefinitely without yielding results.

The simple principle is: the chairs in the decision-making room are a limited resource. Use those chairs for people who can make decisions during that meeting, not for those who just need to be informed.

The tool brings back.

Decision checklist

Topic: Invite representatives from all parties or invite all relevant people into the consultation room? Sinh Vũ guide, sinhvu.com

0 more than 6 items

Select each item you find appropriate, then print or save as PDF to take with you.

Sign indicating that you should take action
Questions to answer before deciding

If you have marked most of the signs above, this is the time to discuss in more detail. Sinh Vũ can help you review and propose a direction.

References

Stakeholder Representatives, Beyond Intractability; Aubrey Mendelow, Power-Interest Grid (1991), Proceedings of the International Conference on Information Systems; two pizza rule (J. Richard Hackman, TechTarget).

Frequently asked questions

If the top boss cannot attend, should we postpone the meeting?

Depending on whether the boss has truly delegated authority to someone. If there is already someone with a clear mandate, the meeting can proceed. If not, postpone and clarify the mandate first, as finalizing without the boss's approval wastes time for both sides.

If the organization has four relevant departments, each with three people wanting to participate, should they all be included?

No. Having twelve people in a decision-making session makes it difficult for discussions to converge and often results in no decisions being made. Keep the decision-making circle to four to six people who have authority, while the other three departments can participate through separate feedback rounds before or after.

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