How is the 'Project Manager' approver type used in a Claims Workflow configuration?

This feature is available on Premier and Master edition
Claims linked to specific projects can be routed to the Project Manager for approval.
Navigate > Config > Basic Settings > Company Settings > Workflow Configuration

When configuring Project Costing at Company Level, you can assign an employee as the Key Accounts Manager. This designated Key Accounts Manager will then serve as the approver for the associated project in the workflow.
Navigate > Config > Payroll > Costing > Project Costing