I have a situation where I have 5 different layouts for printing out a work order. The workorder has records for line items of products (garments), and a sub summary part that lists printing information for up to five different print locations on the garments. A master order could conceivably have up to five permutations of print schemes ie; Line item one has one print on the front, line item two has the same print on the front, and another on the back, and so on. I have written a script using a key that calculates the number of print positions, loops thorough from 1 to 5 and prints the appropriate records with the appropriate layout. I am fearful that when there are many records, this will get slow and cumbersom, especially for users from our remote office. My question is if there is a technique, or plug-in, or some kind of voodoo that I can just have a subsummary part sorted by the key that switches layouts based on the key ?

It sounds like you want a single print job to print from multiple layouts depending on the contents of the record. This isn't possible and is best handled with the method you describe.