Hey Jaspreet,
Congrats on being in the sweet spot CRS score of 456...
Regarding your query, It does not matter if the position is lower or higher... as part of your "reference letter" you should include both experiences..
- Position# 1 - Job Title - Start date(YYYY/MM/DD) - End date(YYYY/MM/DD)
Followed by job responsibility for this role
- Position# 2 - Job Title - Start date(YYYY/MM/DD) - End date(YYYY/MM/DD)
Followed by job responsibility for this role
This letter should include your working hours/week and your annual salary package and other benefits if any(it should be on your office letter head) and signed by a responsible person within your org.
Ensure that there is no gap in between these 2 positions. If you have a promotion letter available include that along with other relevant docs like offer letter, salary slips etc.
From the EE application, you should mention in job title section:
"Administrative Officer, further Operation Office Supervisor"
Use the NOC code of Operation Office Supervisor, where you have to include the Four digit NOC code.