If you're having issues, please make sure to let us know on the forums. We do like to help. We're still working on some things, but whether or not things get finished or make it in the release, I cannot say for sure.
Regarding Locking - It's more to help set and keep lineups. In our stream this week Jeff went over it some. It's up on our YouTube channel.
And it will be the same in FHM6 as it was in FHM5 - at least right now.