Add Payment Terms
From any drop down of terms you can add additional terms as they are required.
In the new terms drop down, type the name of the terms you want to add. In this example I typed "My new Terms"
After you type a term that is not found, you can press Enter, or Tab, or click the Add My new Terms... button below the dropdown.
You can choose between standard and date driven.
Standard is a simple net due in a number of days, you can still apply a discount. If you wanted "5% 10 Net 30" you would set a discount type of percentage, "If paid in full prior to" to 10 and "Percentage" to 5
Date Driven is for terms that will rollover to the next month if the invoice/Bill is generated close to the end of the month.
Once you click "Create" the dropdown of terms will be automatically set to the new terms you added.