Hello, 
The question I have sounds very easy, how do I cancel all the remaining subworkflows that are not already "answered" to? 
Parent - 12345 - will wait for all 3 subworkflows to be done
Child 1 - 12346 - finished
Child 2 - 12347 - in progress
Child 3 - 12348 - in progress 
All I need is, if I cancel 12345, then 12347 and 12348 will automatically be classed as finished. Can you help at all? 
Thank you!!
                        
 
                                    