Explanation
The Include Subfolders filter is a toggle button that appears in the Monitoring pages when a modern folder is selected from the Folders drop-down list1. The modern folders are folders that can have subfolders and support role-based access control2. The Include Subfolders filter allows you to choose whether to display the data for the selected folder only, or for the selected folder and all its subfolders3. This filter applies to the Jobs, Queues, Triggers, and Robots pages4. The Include Subfolders filter helps you to monitor and manage the processes and resources across different levels of folders.
https://forum.uipath.com/t/read-all-file-from-sub-folder-and-sub-folder-of-sub-folder/460493