A negative value line in a bill - how to enter?

Hi there!  I'm a Reckon One user, currently trying to enter a bill for an insurance endorsement.  A few things were changed on the policy, so some have resulted in increased premiums for the items, and one has resulted in a decreased premium (shown as a negative amount/refund).  How do I go about entering the line for the item that received a refund on it's premium?  Reckon One won't let me enter a negative value (which will post to an expense account).  I was able to do this in my old Reckon version, Reckon Accounts:  Easystart.  I have separate expense sub accounts for each item insured, for my own cost tracking purposes, and don't really want to do away with such a system.  Thank you!