Signup with your email id, remember it is a single user account so you might want to signup with a common company email or a dummy email which is safe.
Once logging in, you see this welcome page. Click on Livestream -> Add livestream.
Name: Any name which will describes camera and it's position
Internal IP: Visit your CCTV camera software or device box (for IP cameras) and copy/paste the internal IP address with port number here, it will look something like below.
Type: Recommended type is default, to run custom scripts click Custom
Configuration: To add custom script, build configuration first and then select the configuration while adding new livestreams.