First, confirm if the team member's role aligns with their job description. If not, management should adjust their responsibilities. A clear process workflow and a well-defined negotiation policy will help guide the team, supported by training to ensure consistency and compliance. If issues persist, advise the team member to align internally with the negotiation leader beforehand to avoid any disruptions. These steps should secure a successful negotiation process.

1. Address Behavior Privately: Calmly discuss the disruptive behavior with the team member outside of the negotiation setting. 2. Set Clear Ground Rules: Establish guidelines for respectful communication to create a structured negotiation environment. 3. Redirect to Objectives: Focus the conversation back on the main goals of the negotiation to maintain clarity. 4. Encourage Constructive Input: Invite the disruptive team member to share their ideas in a positive and productive way. 5. Use a Neutral Mediator: If needed, involve a neutral third party to facilitate discussions and ensure smooth communication.

Before the negotiation starts, be clear about roles and responsibilities during the negotiation. If a team member disrupts the negotiations, remove the member immediately.