iPROMOTEu standard terms are NET30. If you would like to change your customers billing to looser terms past NET30, please contact Accounts Receivable at arteam@ipromoteu.com or 844-948-0744.
However, if you would like to change your customer to tighter terms, you can go to the Customers Menu option and select Customer Billing.
Search for your customer and update the Terms on the right hand side.