Add/Remove Fields from Print Format
To explain, let's consider Purchase Order which has the following fields in the Print Format, and here, I want to add 'Supplier's Contact Name' under Supplier Name and remove the 'Weight Per Unit' column from the Item's table.
Step 1: Navigate to the Print View of the document you want to change the Print Format of -> Menu (...) -> Customize
Step 2: Search for the field by name and add it to the desired location
Follow the same drag and drop method to remove the fields as well.
Step 3: To add/remove the fields from the child table of the document: Locate the table -> Select Columns -> Check/Uncheck as you wish.