Creating custom approval process definitions is not getting selected by the expense transactions

When I create the new approval process definition with the effective date as 01/01/1901 for the expense reports/travel auth/cash advances, the system says no approvals required eventhough I did clone from the delivered approval process definition. We have two levels of approvers. 1. Expense Approver 2. Pre-Pay Auditor. The client needs both the levels to function as Pooled worklist. But the delivered requirement for Expense Approver as "All Approvers Needed". And so If I create one with this changes in it, all the expense transactions goes directly to approved for payment as against of going through the approval process. Is