personalize self service

When setting up Banking information for an AR Customer the user selects 'create' to set up the new banking information and the default is to search on the 'Bank Branch Name' field.   It's possible that the bank branch may already be set up, but searching on the name may not return the right branch or any branch if the name isn't type exactly like it's set up.    Since the user has the void cheque which includes the branch number, they are changing the search criteria every time from branch name to branch number.   

Is there a way to change the default search value on the self service screen from branch name to branch number.