Contact information displayed under Account details

Contact information displayed under Account details

Hi

When a contact is displayed on the main profile of an account it displays their name,email and phone number. I want to display their department/role in this area to allow quick identification of the correct person to contact under the account. I can customise the contact's 'business card details' to include this but it is not transferred through to display under the account. How can i customise this view on the account view?

Cat