I have the following needs in developing a pipeline on Azure Devops with our own instances running as agents:

1. I need stages to execute concurrently
2. Each stage needs to be guaranteed to execute on its own agent

I have #1 going. The problem is that I am running into resource and port contentions. I am outputting the build ID on stage runs and they often report the same agent:

steps:
- task: Bash@3
  displayName: Debug
  inputs:
    targetType: 'inline'
    script: |
      echo "Agent ID: $(Agent.Id)"

How do I make sure that each agent only runs one stage and/or job at a time?