Asking for a reason when cancelling a change request

[Rob96]

I'm trying to get our instance to request a reason for cancelling a change request. At the moment choosing cancel simply sets it to a state of cancelled. 

I've imported the client script Show Cancel Reason modal and 2 UI pages change_confirm_reason and change_confirm_cancel which weren't present on our instance.

None of this has changed the behaviour. What I am missing? Not really sure why there are 2 UI pages which appear to be trying to do the same thing.

[kaavyas22it]

The current ServiceNow Instance version, i.e Brazil is asking for Cancel Reason but I am trying to remove that feature so that the change request can move to cancelled without giving the mandatory cancel reason.