To build out your contact lists, you’ll want to invite others to connect on Symphony. Note: If you are using Symphony for Business or Enterprise through your company, you will already be connected to your colleagues.

To send a connection request, use the left Nav. option to Invite Contacts (see below):

Then enter details for the user(s) you’re inviting:

The other party will receive a connection request under Social Activity:

Once they have approved the connection request, both of you will see each other’s names displayed under chats in the left Nav.