Automating USB backup

I am unable to figure out how to do scheduled backups of selected Public folders on my DL4100 to an external WD USB hard drive. I have created jobs to do this and have successfully run them manually. However, I would like to be able to have these jobs run at a specific time of day and a specific day of the week. (I am able to do this easily from the administrative interface on my Synology DS213.) Is there such an option in the interface of the WD DL4100 that I am missing? If not, does one of the Apps that can be installed on the DL4100 include such capability?

Hello,

At the moment, that option is not available on this unit.

Please add this to the ideas board to see if that can be implemented on a future update.
https://community.wd.com/c/network-attached-storage/network-product-ideas