Make Changes to My Document with the Properties Panel?
The new Properties panel in InDesign CC 2019 allows you to make document changes on the fly straight from the panel.
From the top down you can:
Adjust the document size and orientation
Manually change the width and height of the document globally
Change the number of pages in the document and whether they are facing or not
Adjust the top, bottom, and side margins
Adjust the layout of the pages within the document (when you click on Adjust Layout, a new panel will open that allows you to change additional settings, such as the bleed value)