For Part Curing, you can specify Number of Parts.

By default, this is the maximum number of parts that can fit in the oven. The cost model assumes rectangular nesting, with a border around each part specified by the cost model variable nestingAllowance (5mm in starting point VPEs). With this setup option, users can override the default on a part-by-part basis, and specify a number of parts. See Number of Parts for Part Curing.