On occasion, you may need to enter a negative number in a field, typically when creating invoices and payments.

Enter the number in the field, and click the ellipsis or drop-down arrow to open the calculator.  In the calculator, click the +/- button.

A negative sign will appear in front of the number.  When you move out of the field, the number will be surrounded in parentheses, e.g. (100.00), indicating that the value is negative.