Form Notifications - all stages/delegate managers

At the moment only the line manager gets notifications when a form goes from stage 1 to 2. If we give someone else delegation rights they wont get notifications which is counterproductive really as technically they are acting as the person's line manager.

In addition when a Form goes from stage 2 to 3 again there is no notification being sent to the person reviewing and providing final sign off for the form at Level 3 even though this appears on their action points within the LMS dashboard. Anyway we can fix this?