How can I merge multiple duplicate participants at a time?

1. Click on the Participants Tab
2. Click Manage
3. Click Load Duplicates. 
4. Select "Merge this participant into the one on the right" if you want the left entry to be merged into the right entry. Select "Merge this participant into the one on the left" if you want the right entry to be merged into the left entry.

We load 1000 duplicate records at a time. As you merge participants, you can click Load Duplicates to load more.