The Change Duplication command provides the two subcommands Set and Remove. They provide an alternative to define the duplication mode whenever you copy action or transition elements.
Also refer to the alternatives:
oDefault insertion method in the Tools > Options > SFC Editor dialog box
oSelecting the Duplication Mode for Step Actions when inserting new steps
The Change Duplication > Set command leads to a specific way of embedding steps or transitions: Each action or transition element can only be called by exactly one step or transition. This has the effect that, whenever you copy step or transition elements that call actions or transition objects, automatically new actions or transition elements are created. The implementation code is copied during the process.
You can hide these embedded objects from being displayed in the Applications tree by executing the Hide Embedded Objects command.
The Change Duplication > Remove command disables the automatic pseudo-embedding of steps or transitions that had previously been enabled by executing the Change Duplication > Set command. This has the effect that, whenever you copy step or transition elements that call actions or transition objects, the new steps or transition elements call the same actions or transition objects as the source elements.