skip claimant approval when using a delegate

Oracle R12 Internet Expenses

When user X allows user Y to raise expense claims on their behalf, Oracle automatically send the expense claim to User X for inital approval prior to walking up the approval chain.   Is there anyway to stop the claim going to user X for approval?

We would like to use the functionality where the employee can allow someone else to raise an expense claim on their behave, but we want to disable to functionality where the claimant is required to approve the claim prior to walking up the approval chain.

e.g.
claimant A
delegate B