You can add and remove tags from listeners in Hello Audio using a Zapier step.
Choose the "Add/Edit Listener Metadata in Hello Audio" action, and add your tags, comma delimited.
You'll need a separate trigger for the Zap to get it started. This will likely be a non-Hello Audio trigger.
Use this feature to integrate actions a listener takes outside of Hello Audio to control content delivery inside Hello Audio. You can deliver episodes and dynamic content based on listener tags. E.g. Listener doesn't have a tag? They don't get that episode.