Click on and you'll get:

Choose Profile 3.

Double click on "C:\" and then on "FileManagDemo" directories.

Click (not double click) on Folder_A and drag it (keeping mouse clicked) into selected directories.

Click on B in Total.

Click (not double click) on Folder_B and drag it (keeping mouse clicked) into selected directories.

Now check the Files, Level 2, Level 3 and More... checkboxes.

At this point you get:

Click on OK button and you get their directories information.

Try checking Show Rows and Show Columns checkboxes options to see more information.

That's it !