Finance User Responsibility - Affected by HR localisations - Mandatory data

Is it possible to amend the Responsibility to not pick up the country specific localisations?

I have a user responsibility for my Finance team to maintain Finance assignment records, but due to an implementation of HR (Finance was in first) there are now HR Mandatory fields on the Finance assignment records - how can I make these non mandatory only for the Finance responsibility (tried forms personalisations - no joy)