Hi there,
You can do this via a policy, or individual jobs.
I would suggest creating individual B2D folders, assuming you have enough space, and assuming this is what you mean by segmenting your backups. Once done, you can then target your jobs to these specific folders, and simply run a job to stream off to the Blu-Ray recorder once done (check that it is supported in the HCL of whichever version you wnt to move to).
Laters!