Supplementary Employment with same Employer

Hi,

Is this a possibility?

Assume that I am currently on the job code 2136 and working as software developer for XYZ.

I can get a supplementary employment with the same company who sponsored me the visa as Business Analyst . This is a job code 2135 which is part of shortage occupation list.

In my view that's a very open ended Q. You can work 20 hours but for the same SOC / similar role. For a different role, they need to run another COS but not RLMT as the job is on the shortage list.