1. Click “Contacts” on the toolbar at the top. 
2. Click "Advanced Search" button on the top right next to “Filter” button and enter search criteria to find duplicate contacts (i.e., Is Duplicate: Yes, Include first name). 
3. Click search. 
4. Next to the contact’s name, check the box that appears to the left for the duplicates you would like to merge into one contact.
5.  Click “Merge” under “Quick Search” on the top of your screen. 
6.  Information will be merged into the contact highlighted in grey.
7.  Select the fields with the information you want to keep for each category.
8. Click “Update Contact” at the bottom of the page.
9. Click “Save”.