You will quickly notice that there is no print button in Bkper so you cannot print anything directly from Bkper. Instead we leverage the Google Sheet Capabilities to print anything you want without any creative limitations, to generate any information you want from your Bkper books.
You fetch any piece of information from your book on a Google Sheet with the Bkper Add-on. Format that information in any shape to report and use Google Sheets to print your report.
Over time this has proven much more effective and flexible to create reports rather than Bkper trying to provide a "few configurable standards" to print.