For AFP2, i was the sound recordist and sound designer.
I recorded all audio and make sure to have plenty of back-ups just in case something went wrong. Recording the ambiance at every location is a must.
In Post, i work closely with the editor. I did folleys and also ADR when needed. Monitor the synching of the audio. Help finding the sound effects needed for some of the scene.
I also do up the Sound Tracksheet when the edits are done to keep track on the audio and see where i placed it so that if the final cuts were to go missing atleast, i know where to place my sound again to synch with the video.