How can I add a shared approver by type?

Only System Administrators can add shared approvers by type. Go to “Administration” in the left side bar > then click on “Remote Working” > click on “Shared Approvers” > “Shared Approvers by Type” > click on the type for which you want to assign a shared approver > add the person by entering their name in the search bar or select them from the drop-down list.
Tags