How might procurement-related activities involve managing stakeholder engagement?

As a Project Manager, what procurement management activities have you performed or experienced in the past?
If the PM has not completed those activities, who in the organization has?
What procurement-related activities do you anticipate that you will be expected to complete as the project manager for IRTC?
What activities need to be identified and performed right now?
How might procurement-related activities involve managing stakeholder engagement?