change owner/permission only for file or for directory

Hi,

i would like to know if there a special button or command in WinSCP to change permission to file ONLY (or to directory ONLY) as for the owner ?
till now i added a special command as following:
find -type f -print0 | xargs -0 chmod 644

but it returns me error

thx

Sorry, I do not understand.
What are you missing about the Properties dialog?
https://winscp.net/eng/docs/ui_properties