In a strip plot design it is possible to reorder material between processing stages. Suppose units are labelled and go through the first stage in a particular order. If it is possible to collect all the units at the end of the first stage and reorder them for the second stage process, then the second stage variables are not nested within the blocks of the first stage variables. For example, in semiconductor manufacturing a boat of wafers may go through the first processing step together. However, after this step, the wafers in a given boat may be divided among many boats for the second stage.
To set up a strip plot design, enter responses and factors as usual, designating factors as Very Hard, Hard, or Easy to change. Then, in the Design Generation panel, check the box that says Hard to change factors can vary independently of Very Hard to change factors, as shown in Example of Strip Split Factors and Design Generation panel in Custom Designer Dialog. Note that the Design Generation panel specified 6 whole plots, 12 subplots, and 24 runs.
When you click Make Design, the design table on the right in Example of Strip Split Factors and Design Generation panel in Custom Designer Dialog lists the run with subplots that are not nested in the whole plots.