Adding a custom field to iSupplier to capture Organization Unit

We have a requirement to have our new or existing suppliers to go to our Organization Unit (OU)for review and  confirmation before sending

them to our Sourcing Department for final approval and adding to our Oracle supplier database.

Is there a way to open a custom field so that we can store a list of of Organization Units and have our supplier select their appropriate OUs? For example Finance, Sales, IT, etc…

Thanks for your feed backs,

Best Regards,

Abb.