1. Go to the dashboard and click "Contacts"
2. Click "Upload contacts"
3. Click "Browse"
Click "Next"
4. Map the variables with the columns of the CSV file
5. The max phone number you can add per property is 4, but 8020REI will send you a special file so you can add more.
6. Click "Apply"
Click "Back to upload"
For more information, watch this video.