You can create custom metrics to report on flows from Klaviyo using Klaviyo Metric Builder in Databox. Follow these steps to create them:
Go to Metric Builder and set up your Klaviyo metric.
Choose "Flow" for the "Filter: By" and add additional filters to filter only specific flows, if needed.
After you preview the results, you can click on the three dots right next to where it says Dimension and click on "Rename" to rename the dimension to something more descriptive (e.g., "Campaign Name").
Optionally, you can also filter out the (notset) dimension.
Save the metric.