Transfer Files from Wireless Passport to My Cloud Mirror

I have just purchased a My Wireless Passport, which I will be taking on a trip later this year. I will be using it to transfer my Videos/Photos from my cameras SD card. But as a extra back up, I would like to then transfer the files to my My Cloud Mirror Network Drive, I would prefer to be able to do this via the IOS app, as I didn’t want to take my MacBook on the trip. Is this possible ?. If so could anyone give me a bit of advice on how to go about it.
Sorry if this is a bit of a newbie question, but I am still getting to grips with the Wireless Passport.

Use the My Cloud app, BUT, see this post I made, because it can affect your uploads to My Cloud Mirror