Let's say you've defined an indicator with a complex structure. In the example below, we see a number of sub-indicators. The response structure is that of a multiple choice question, with five columns or classes.
This response structure may be interesting for another indicator, but you may not want to copy the sub-indicators and their targets. So instead of copying the whole indicator with all its responses, in this case you can copy the response structure (the five columns between the Label and Target columns) to another indicator.
Steps:
You can see that the response structure has been copied, but none of the actual responses.
Note that this action also changes the question type. If the question type of the second indicator was set to Open ended question before, it will change to multiple choice question after you paste.