According to the PMBOK Guide, conflict management is the process of identifying and addressing differences that, if left unresolved, could affect project performance1. The project manager should use appropriate conflict resolution techniques to facilitate constructive interactions among stakeholders and foster a collaborative project environment2. One of the conflict resolution techniques is collaborating, which involves incorporating multiple viewpoints and insights from different perspectives, and leads to consensus and commitment3. In the given scenario, the project manager should use a direct, collaborative approach with the technician and supervisor to understand the root cause of the conflict, address their concerns, and find a mutually acceptable solution that does not compromise the project objectives. This approach would also help to improve the relationship and trust between the technician and supervisor, and enhance their performance and motivation. References:
* 1: PMBOK Guide, 6th edition, p. 504
* 2: PMBOK Guide, 6th edition, p. 505
* 3: PMBOK Guide, 6th edition, p. 507