thanks for that , got it to work
frankly , whoever wrote the software for this needs to find a 12 year old to show him the way …having pressed the yellow button to find that you could then tick the folder suggested to me that you could transfer the folder …but not at all
the reality is that you can only transfer from one folder at a time ,by opening it as graham says
only when this is complete can you select files from another folder by opening it and then clicking the yellow button again