Can I add a custom influxdb tag？

I use this plugin to save the stages information in finfluxdb, and it works very well. I want to use this data in grafana, I need to use the jobname of the stage as a tag because i want to use query "select ... from stage group by jobname", but it's a field. what should i do?

Start by tracing how the plugin records stage information for InfluxDB and where fields and tags are defined; the issue names no files or tests. Determine the supported approach for making the stage job name a tag for Grafana grouping, then verify the emitted data supports the requested query.

Written by the indexing model from the issue text.