QB Issue Resolution:

Set up terms, apply to each customer/job.

https://community.intuit.com/articles/1778217-set-up-payment-terms

Resolution for Issue 'Is there a way in QB desktop to change the default due date on invoices? I would like my invoices to automatically populate due date as 2 weeks past invoice date.' available: Yes (Solved).
Source: Intuit Community forum.

Is there a way in QB desktop to change the default due date on invoices? I would like my invoices to automatically populate due date as 2 weeks past invoice date.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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