Run a default/specific pipeline stage during git push

Hello Folks,

I'm basically a Jenkins user starting to move pipelines to Azure Devops. 🙂

I would like to run a specific/default Stage whenever a new git push is performed, but not the entire pipeline.

Part of the pipeline logic will be triggered manually by stages, thus, I would not like to have it running everything on every push.

Is it possible? Any references pls? 

Thanks

-Daniel