Make a job easily searchable in Azure Runbook
AFAIK currently there is no way to label job so that it is easily identifiable from the Overview screen. If interested, you may raise feature request in this UserVoice / feedback forum. I see this related feature request already raised so you may even upvote it. In general, Azure feature team would check feasibility of a feature request, triage it, prioritize against existing feature backlog, add in roadmap as appropriate and would announce and/or update the related Azure document once a feature request is addressed.