This article explains how to review & update resource allocation across all plans. As a Resource Manager for a team or department of resources, you would want to verify your team isn't overbooked. You may also want to commit specific named users to plans where generic role placeholders had been used.
Navigate to Resource Plans
Navigate to Resource Plans via the main navigation. This shows all resource plans across all plans. Based on the planning units mode (%, hours, or FTE), you see the total per resource. The colors show whether the resource is booked under, at, over their capacity.
Group, filter, and adjust view as needed. For example, group by role. Expand a role, such as Business Analyst. Then, expand the resources within the group to see to which plans the resources are allocated. You can drag a plan to a different resource to commit someone else to that plan.