Organizing performance improvement programs is a proactive approach to address the identified gaps in team performance. It aligns with the PMBOK Guide's principles of continuous improvement and the development of team competencies. This action supports the growth of individual team members and enhances overall project performance.
= The PMBOK Guide1, which outlines the value of continuous improvement and team development, and the Professional in Business Analysis Reference Materials2, which emphasize the importance of addressing gaps in performance through structured improvement initiatives.

When faced with internal team conflicts, especially between a team lead and an experienced engineer, it is important to address the issue collectively. Organizing a meeting with the project team allows for open communication and collaborative problem-solving. This aligns with the PMBOK Guide's principles of conflict resolution, which include promoting a team environment where issues can be discussed and resolved in a manner that respects all parties' perspectives1. It also adheres to the Professional in Business Analysis (PMI-PBA) guidelines, which emphasize the importance of addressing conflicts directly and seeking a resolution that supports project delivery2.
References:
PMBOK Guide - Sixth Edition, Section 9.6 - Manage Team
Professional in Business Analysis (PMI-PBA) Reference Materials

When changes to the project scope are identified, it's important for the project manager to review these changes with the project stakeholders. This allows for a collective understanding of the impact of the scope reduction on the project's objectives, deliverables, and schedule. It also ensures that all stakeholders are aligned and in agreement with the proposed changes. This approach is in line with the PMBOKGuide's emphasis on integrated change control, which involves reviewing all change requests, approving changes, and managing changes to deliverables, organizational process assets, project documents, and the project management plan. References: PMBOKGuide - Sixth Edition, Section 4.6: Perform Integrated Change Control

A project manager should mentor the team member who is asking for directions and actions on many tasks, as this indicates a lack of confidence, competence, or clarity in the team member's role and responsibilities.
Mentoring is the process of providing personal support and guidance to a less experienced team member by a seasoned project manager. A mentor can help the team member develop their skills, knowledge, and abilities, as well as provide feedback, advice, and encouragement. A mentor can also help the team member understand the project objectives, scope, deliverables, processes, and standards, and how to align their work with them.
By mentoring the team member on a regular basis, the project manager can help the team member improve their performance, productivity, and quality of work, as well as increase their motivation, engagement, and satisfaction. References: Project Management Professional (PMP) Certification | PMI, Mentoring - Key Competency for Program and Project Professionals, What Good is a Project Manager Mentor? | PMI

According to the PMBOK Guide, the project vision is a high-level description of the project's purpose, scope, and objectives. It provides the direction and alignment for the project team and stakeholders. The project vision should be clear, concise, inspiring, and consistent with the organization's strategy. When the scope has changed significantly and the product owner has been replaced multiple times, the project vision may become unclear or outdated. The team members may feel disassociated from the project and lose motivation and engagement. To ensure team alignment with the goals, the project manager should facilitate a discussion of the vision for the project, involving the new product owner and the team members. This will help to clarify the project's value proposition, expected outcomes, and success criteria. It will also help to reestablish trust, collaboration, and commitment among the team and the product owner. Asking the new product owner to explain the importance of the project, emailing the team a detailed outline of the business requirements, or reviewing the project charter with the team are not sufficient or effective ways to ensure team alignment with the goals. These options may not address the underlying issues of the team's disassociation, such as lack of involvement, ownership, or empowerment. They may also not reflect the current state of the project or the organization's strategy. References: PMBOK Guide, 6th edition, pages 30-
31, 89-90.