The Employment Permits system is managed through the operation of the Highly Skills Eligible Occupations List (HSEOL) and the Ineligible Categories of Employment List (ICEL) for the purpose of grant of employment permits. Reviews of these lists are conducted biannually to consider occupations for inclusion on the HSEOL, or removal from the ICEL.
The lists are organised using the Standard Occupational Classification system (SOC 2010), a system that classifies workers into occupational categories. All workers are classified into one of 840 detailed occupations according to their occupational definition. To facilitate classification, detailed occupations are combined to form 461 broad occupations, 97 minor groups, and 23 major groups.
The information is contained in the following link.
Schedules 3 and 4 Regulations 2018