1) If you have activated the function and the track turns green, the assistant is active. Now all you have to do is activate the tip-flash (3x flashes) and the assistant takes over the steering. All you have to do now is hold the steering wheel and the attention assistant must confirm your attention (look ahead). The Smart then automatically changes lane (if it is free) and also flashes for as long as the lane change takes.
2) You cannot currently transfer destinations from your mobile phone to the Smart navigation system.