Allow use of typeahead even if not permissible to object type

The typeahead field is a great time saver...until a user can't do anything with it. We have a request form that asks the requestor (lowercase 'r') to select the Portfolio associated with their request. However, anyone of the Requestor (capital 'R') is inherently and forever granted No Access to Portfolios and Programs. All we need them to see is the name, which the typeahead should provide.