Click on “My Connections” on the left sidebar and click the “Add Connections” button in the top-right corner. Then you’ll see possible ways of importing your connections.
If you want to import your LinkedIn connections manually, choose the "Import CSV manually" option from the list.
First you should export your connections from LinkedIn:
Log in to your LinkedIn Account.
Open Settings & Privacy from the top dropdown menu.
Select Data Privacy in the left-hand sidebar.
Click “Get a copy of your data.”
Select “Want something in particular?” and choose the “Connections” option. Click “Request archive.”
Confirm with a password (if needed) and a copy of your data will be generated in just a few minutes. You’ll be notified to your Linkedin-associated email when the file is ready to download.
Download and unzip the archive.
Return to The Swarm, where you can select and upload your “Connections.csv” file.
Once you click "Import" you should see your first imported connections after just a few seconds.
I can’t see all of my Connections on The Swarm after uploading the .CSV
Don’t worry if you can’t see all of your connections at first, because the process of combining and enriching them may take a moment. Connections will appear gradually, so you should see them all when you refresh the page after a couple of minutes.