6 Sales and service occupations
According to the NOC 2011 tutorial, the coding for the major groups (first two digits) means the following:
Skill type: 6. Sales and service occupations
This Skill Type category contains sales occupations and personal and customer service occupations including hospitality and tourism.
Skill level: 2 or 3. College degree or other alternative combinations
Skill level: 4 or 5. Some secondary school and on-the-job training
Skill level: 6 or 7. On-the-job training