Wondering if this is possible?

I'm looking to offer 3 appointment times on Tuesdays, Wednesdays, and Thursdays. 60 minute duration for each appointment. 10am, noon and 6pm. I'm having difficulty doing that if i want 60 minute durations.

I've tried this on this page: http://amazingsystem.com/meetings/
and also this page: http://amazingsystem.com/bookyourcoaching

The 2nd page works the best but when people register, it says the duration is 120 minutes, not 60. If I change the settings to 60 however, then i get other times like 11am, 1pm etc. that I didn't want.

Any options I missing here?

Thanks!

David Farr