Read the job descriptions you find here:
http://www5.hrsdc.gc.ca/NOC/English/NOC/2006/SearchKeywordResult.aspx?val11=procurement&val12=0&val13=0&val14=&val15=0&val16=0 and pick the one that suits your job the best. The one occupation there that is low skilled is 1474.
The way you see if an occupation on there is skilled is from the 4 digit code.
If the first digit is 0, it is Skill type 0. If the first digit is not 0, you look at the 2nd digit. If it is 1, then it is skill level A. If it is 2 or 3, it is skill level B. If it is 4, skill level C and 6 is skill level D.