From the search results you can create an Engagement Overlap: select between 2 and 10 profiles and start an overlap. influData then calculates how much the audiences of these creators intersect, based on the people who engage with them: how many commenters show up at more than one of the selected accounts versus how many are unique to each. This tells you whether booking five creators actually reaches five different audiences or largely the same people twice.
Notes: all selected profiles must be from the same platform. Every creator's audience report needs to be unlocked; creators that are not unlocked yet are unlocked automatically for 1 report credit each. The calculation can take up to about an hour. Finished analyses appear under Reports in the Overlaps tab, where you can explore the overlap score, unique commenters and pairwise overlaps in detail.