Hi,

Don't know if i am too late, but here is my personal(!) understanding of it:

Assignment Group: The group that is assigned and as such responsible for the device/tasks/record. This can be the group working on a task, but it may also be the group "using" a device. At the end of the day those are the people i would ask "What" something is.

Support Group: The group that is supporting the device/task/record. They don't always work on/with the record, but they are knowledgable about what to do with it. If i have an issue or request for something, i go to these guys.

In the case of an incident, the group assigned to a task would be the one working on it. If i have a CI with a support group, incidents for that CI will be assigned to the support group (most likely). However, if someone needs to approve something regarding the CI, said approval should be done (at least) by the assignment group, as they are responsible here.

Now this is not the absolute truth, but my understanding of it. Still, i hope this helps.

Regards

Fabian