How do you escalate tickets

How do you escalate tickets

Folks,
 
How do you escalate tickets?  We are consolidating our service desks and thought that we could simply use the Level to move tickets from Tier 1 to Tier 2. However, there is no notification based on changing the level.
 
Do people still use the level within the service desk?
 
Do you make different support groups for the different levels?
 
Thanks,
Adam

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