Band 6 Interview Help!!!

I have been working on a Paediatric Intensive Care Unit for 6 years as a band 5, I now have an interview for a band 6. My presentation question is What impact does the expansion of beds have on the band 6 and 7 team? I also have extended roles such as retrieving patients from district hospitals and clinical liaison role in Blood Transfusion including audit, clinical assessment and education. How can I push these roles? I would appreciate any help!!! Thanks