Absence Escalation

Summary:

Hi Team

Have a requirement where the Absence request needs to be escalated to the next level Line Manager if it is not approved in 5 days. It should get escalated to next level till it reaches a particular level (Department Head). How to achieve this?

Content (required):

Under 'Deadlines' in BPM, tried using 'Assignee Level' as it needs to stay with the each Line Manager for 5 days. But, not seeing any options to map the particular level to stop the request.

Under 'Task Level', the 'Highest Approver Title' LOV exists with set of predefined values. How the values listed in LOV maps with the work structures defined?