Our helpdesk manager doesn't want incidents to get reassigned anymore but instead use "incident tasks" to get them to work them assign tasks to other teams which is why i have to set up paging on tasks. they will also have their own sla type things for p1 or p2. so i'll be carrying over some of the values from the incident. So if main group A needs to get group B to help on a Incident they will assign a Incident Task to group B. If it's a P1 or a P2 then it needs to page them like Incidents do. They will then do their Task and it will notify the person assigned to the main incident when they are done so yes there will be the relationship.