A plurality of stitching machines and a control system used in stitching patterns into a plurality of items is capable of flexible control. The plurality of stitching machines may include one or more clusters of stitching machines, with each cluster able to stitch patterns into items independently of other clusters. Stitching machines within the plurality of stitching machines, or within the clusters of stitching machines, may be set to stitch patterns into items using one of a synchronized mode and an unsynchronized mode. When in the synchronized mode, the stitching machines perform stitching substantially synchronously with other stitching machines, and when in the unsynchronized mode the stitching machines perform stitching independently of the status of other stitching machines.