Helle everyone, I read a lot of page about escalation process but I still wanted to consult you. Firstly, I used status in workflow to configure the process. And we have 3 support level groups. These are Tier 1, Tier 2 and Tier 3. You can see the workflow in screenshot but it may seem a little complicated.
I set automatically assigne group or user when status becomes tier 1,tier 2, tier 3. And I will set up SLA for each Tier group.
Are these useful ways or do you have any suggestions for a different way or workflow?

