You need to schedule some script that generates a WinSCP script, including mv command.
Some links that may help:
https://winscp.net/eng/docs/guide_automation
https://winscp.net/eng/docs/guide_schedule
https://winscp.net/eng/docs/guide_automation_advanced
https://winscp.net/eng/docs/scriptcommand_mv

Hi, how do I archive remote files into a date-based remote directory everyday? i.e. moving all current remote files from, say, /uploadFiles to /yyyymmdd that reside on the ftp server?

Thanks.