Can you please tell us exactly what it is you are looking for? Your screenshot shows the related list of 'Incidents caused by change' and in your response to Shruti you mention 'Incidents fixed by change'.
First of all: it's weird to have a 'new' button here, since incidents fixed by changes were created before/during the change (they are fixed by the change, so creating a new one is strange) and to first go to the change and from there create an incident caused by change is also not the normal procedure, but could make sense if someone calls about something and the agent answering the phone already knows it's caused by that changed.
Your question about the intercepter doesn't make sense on either of these related lists, since you are always creating an incident when you are on a relates list that relates to the incident table. This will never create a change. Since you original question and response both talk about you wanting to create a new change from an existing one: on which related list are you actually trying to do that?
Please mark any helpful or correct solutions as such. That helps others find their solutions.
Mark
