How do I set the maximum number of streams for multiplexing?

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You must set multiplexing for both the storage unit as well as the schedule. The storage unit can have between 1 and 32 streams per drive. When adding a storage unit specify whether or not multiplexing will occur, and set a value from 2 to 32 for each drive if using it. You also need to specify the number of streams allowed per drive for each schedule for which you wish to use MPX.