Why is project leaving unused capacity in days?

Thanks John-project , you are correct that creating sample set 002 is not physically dependent on the creation of sample set 001 however it will pretty much always be done by the same person. Kind of like that example in the Microsoft learning about trying to have 2 people write an essay that should only take 2 hrs.... it would probably take longer and be more work to try to share these tasks between multiple resources, so i was thinking making them dependant or nonconcurrent would make sense and help with leveling. In this case would you recommend creating the dependency?

Thank you for the further explanation and I did google Heaven's to Murgatroyd, a little before my time, but I do vaguely recall that expression now, I'd forgotten all about it!

Thanks,

Joe