If you only need to add one, or a few, members to your Contact List, adding them manually is easy.
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Step 1: Click your Profile at the top of the screen.
Step 2: Select User Management.
Step 3: Select ADD NEW USER.
Step 4: Fill out form.
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Step 5: Be sure to select at least one Group in the Add To Group(s) text box.
Step 6: Click Submit.
When you see the green banner on the bottom left, your Contact Invite was successful!