• one individual • multiple individuals, same location OR LOB/department • multiple locations or departments
Urgency • tracked by CI/Service, defining the business importance of the identified CI or service
Priority - a matrix solution combining Impact and Urgency - I feel simple is best, yet there are reasons for greater complexity
Escalation - what is your escalation pattern and timing by priority. My favorite: • Assigned user • Assigned user group • Group manager • Group owner • Service Desk Management
Notifications - limit them as much as possible
Communications - do not provide the name of the individual working the ticket
Manage the groups and group membership to ensure accuracy and currency. Be sure there are active employees in each group, that each has a manager, and and owner (if your tool supports it)
SLA - be realistic; by Priority; and don't have too many variations as those are more difficult to manage and validate. This is for mid-level maturity.
The tool should fit your requirements. There are lots of products available and several assessments done regularly to help with your selection. The ultimate tool may not be the best one for your organization.