Profile targets related to Organizations

Hi,
we have 2 Organizations but with the same Prometheus DataSource (Server Instance running on port 9090).
We need to profile each organization with different subset of targets:

- job_name: PR1_POSTGRES_SVIL
  basic_auth:
    username: pr1
    password: pr1
  static_configs:
    - targets: ['000.000.000.000:9100']
      labels:
        instance: PR1_POSTGRES_SVIL
        project: PR1

- job_name: PR2-DB-SVIL
  basic_auth:
    username: pr2
    password: pr2
  static_configs:
    - targets: ['000.000.000.000:9100']
      labels:
        instance: PR2-DB-SVIL
        project: PR2

- job_name: PR2-APP-SVIL
  basic_auth:
    username: pr2
    password: pr2
  static_configs:
    - targets: ['000.000.000.000:9100']
        labels:
          instance: PR2-APP-SVIL
          project: PR2

So in this example we have the 2 organizations PR1 and PR2.
How can we distinguish the 2 DataSources?
Is this a Prometheus configuration problem or we need a specific Grafana configuration?

Best regards,
ruesp83