Please read the document:
https://github.com/DUNE/p3s/blob/master/documents/pdf/JOB.pdf
and follow the setup described therein.
Suggested procedure:
- log in under production id
- create directories under "public" in AFS under your real name
- create a job description based on templates
- run the client to submit the job to p3s and monitor its execution
- check on log files.