Dear Mike Sinoben,
Thank you for posting your question in our community.
Based on your description, we tested whether it is possible to add a vertical section within a Microsoft Loop page. Unfortunately, we did not find any method or option to achieve the functionality you're looking for.
Please don’t worry Microsoft Loop is a relatively new product, and there is much room for improvement. According to Microsoft's roadmap, new updates and features are expected to roll out soon.
You can request this functionality by submitting feedback to the Microsoft Loop developer team through the feedback portal. Additionally, you can keep an eye on the Microsoft roadmap to stay informed about the latest updates coming to Microsoft Loop.
- Click here to provide feedback ----->> Microsoft Feedback Portal
We wish you a wonderful holiday season!
Best regards,
Community Moderator | Sophia