How does the waypoint navigation work exactly?

1.  Say I've got 5 waypoints programmed but I dont take off from my home location, if I then go into AUTO mode will my quad fly to my home location first and then continue to waypoint 1 or will it skip the home location and go directly to waypoint 1.

2.  If I exit AUTO mode in between two waypoints and go back into it again will it carry on with the original wayoints or will it go back to the 1st/home waypoint?

Thanks,