How to Configure Signing Information Project Structcture Dialog

I am getting the "Unfortunately Has Stopped" message in my release version that does not occur in the debug version. So i tried running the release version with debug. It gives me this message "app-release-unsigned.apk is not signed. Please configure the signing information for the selected flavor using the Project Structure dialog.". Well, i have no clue about how to fill in this dialog. Or even if i can do debugging with the release version? Any help much appreciated.
Mick