Customizing Desktop Background

I have selected a folder of images to use as Windows 11 background. The folder has sub-folders in it...Windows will only select images from within the "root" of the folder, not any from the sub-folders.

How can I direct Windows to select images from the sub-folders?

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Edition Windows 11 Home

Version 25H2

Installed on ‎2025-‎08-‎12

OS build 26200.7171

Experience Windows Feature Experience Pack 1000.26100.265.0