RSS Feeds:
Click on a tag, this will tale you to a page with a url such as: https://ucsdcbox-dev.wc.reclaim.press/scholcomm/tag/metrics-and-altmetrics/
Append feed/ and this will create an the RSS feed for that tag: https://ucsdcbox-dev.wc.reclaim.press/scholcomm/tag/metrics-and-altmetrics/feed/
If you want to combine two tags into one feed, it gets trickier: Pull the tag portion of the URL for each tag:
https://ucsdcbox-dev.wc.reclaim.press/scholcomm/tag/metrics-and-altmetrics/
https://ucsdcbox-dev.wc.reclaim.press/scholcomm/tag/workshops/
… and append them to:
https://ucsdcbox-dev.wc.reclaim.press/scholcomm/feed/?tag=
…. but with the special character %2C between each one
https://ucsdcbox-dev.wc.reclaim.press/scholcomm/feed/?tag=metrics-and-altmetrics%2Cworkshops