The times are there, but they are unclickable? Not sure why.
I had the same q. I was doing prov plans for March and told the feature only opens up once show times are confirmed. Just now they are only provisional based on previous years. TP doesn't want you to chose something that might not actually happen. You can manually put in a fixed break at the time you want until it opens up.
@TomW We are going in February and it just recently changed that I can now click on the specific times for a show! Check out this post: http://forum.touringplans.com/t/new-preferred-show-times-for-optimizer/15702
Thank you for posting this question, I thought for sure I was doing something wrong!