Meals Expense Type Questions

Hello,

I have a couple questions surrounding the meal expense types in PeopleSoft 9.2:

• Is there a way to require a business justification or description field when a user chooses a meal expense type without adding configuration?
• Can it be setup so the system does not default in the user as an attendee, which would prevent users from submitting an expense report without entering in other attendees? 
• Can the attendees field be used like a prompt without a customization so users can search by the employee IDs in the system when choosing the attendees?

Thanks!