If you see a green bullet on the map next to user it means that the user is connected to the internet via the WorkInField app. When there's exclamation mark inside a green bullet, it means that the phone doesn't have a solid GPS connection and that no actual position is known.
If there's no bullet next to user it means user has not started the workinfield app and is not currently connected to internet. Real-time monitoring is not possible.
Avatar on the Map
The ghost avatar on the map represents the user's last known position. If the avatar turns from ghost to visible mode, it means that the user has an active GPS positioning.