QB Issue Resolution:

gear>settings>custom forms

select the template you use and in the header section you can select up to 3 custom fields and label them

on each sale you will have to type in the data manually

Resolution for Issue 'How can I ad an additional box in the heading stating “ordered by”?' available: Yes (Solved).
Source: Intuit Community forum.

How can I ad an additional box in the heading stating “ordered by”?: 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.

Support for additional box
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