While there is currently no tool on Lefty specifically built for this, you can still view campaign KPIs for a small group of influencers. To do this:
Create and apply a label to the small group of influencers within your campaign that you would like to analyze.
Once you use these labels, go to the overview of the campaign’s report.
The KPIs will show the results of the influencers with and without the label. You can download these results in CSV or PPT format for later reference. Afterward, you can delete the temporary label to avoid future confusion.