jMeter in Azure Load Generators using the same userid where userid need to be unique

Question

I am preparing a load test in Azure using jMeter scripts. Certain users/userids are tied to specific data.
ie, user_a needs to user data_a, user_b needs to user data_b.
When using multiple load generators, it is only using one userid across all load generators.

The same script running in jmeter, the users defined are being used as intended.

Is there a configuration in Azure where I can ensure unique users are being used?

Thanks