If you add the subframe as you said, the frame will trigger its Pause and Unplanned controls. Then, you can do whatever you want plus pausing stations (recreating what you observed). For instance, imagine a situation where you just pause a machine if the remaining processing time is higher than a particular time. Using pause methods on a subframe would be a way to solve that. Take a look at this section of the documentation, there is a nice example there:
Best Regards, Paulo Araujo
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