Primary NOC selection

[Sheri Fatima]

Hey,

I have a total of 7 years of work experience in my company, a total of 3 Different NOC codes.
1- 2 years in NOC code 1123
2- 2 Years in NOC Code 0601
3- 3 years in NOC Code 1122

What should be the primary NOC in this case? Also, where in EE profile is mentioned about choosing the Primary NOC code.

Looking Forward!