Approvals - Administrative Manager / Line Manager approval of Time & Absence

Summary: We have two manager types defined: Line Manager and Administrative Manager. The Line Manager is the primary approver for time & absence but if an Administrative Manager has been added to the employee’s assignment, time and absence approvals should route to this Administrative Manager instead of the Line Manager. Could someone suggest how best to set this up and/or share what you’ve done to meet a similar requirement?

Content (required): We have two manager types defined: Line Manager and Administrative Manager. The Line Manager is the primary approver for time & absence but if an Administrative Manager has been added to the employee’s assignment, time and absence approvals should route to this Administrative Manager