Windows 10, MS Office 2019, not positive on the version of Word because the about button is not displayed.

Setup so far: Select Layout, Size, and select 4x6
Select File, Options, Advanced and enable: Show text boundaries and Show crop marks.
Neither of the two options are enforced as I edit. The text is displayed without boundaries.
What steps are needed to show text in 4x6 format while editing?

Edit, first reply resolved my problem.