Hi MattHarvey
Thank you for your post. Generally, MYOB Business/ New Essentials works on the principle that there is one set of default terms which applies to all customers . This is set in the Sales Settings >> Payment options screen, see the detailed information here - Set up payment details . In regards to checking individual customers payment terms this field is not exposed in the New Essentials yet .However it can be changed on each invoice, inside the create invoice page it will allows you to change the default payment terms on the Due date section for each customers. See the screenshot below :
Hope this will help! Please feel free to post again I'll be happy to assist.
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Cheers,
Princess