The process of assigning personnel to a project plan typically involves the following steps:
1. Identify the tasks or workstreams that need to be completed.
2. Determine the skills and experience required for each task or workstream.
3. Identify the available personnel who have the necessary skills and experience.
4. Match the personnel to the tasks or workstreams, taking into account factors such as workload, availability, and team dynamics.
5. Make the final assignments and communicate them to the team.
It's important to note that the project manager may not always make these decisions on their own. They may consult with other stakeholders, such as the project sponsor or team leads, to get input and feedback on the assignments. Ultimately, however, the project manager is the one who is responsible for making the final decisions.