Default asus memo pad 10 multi user external storage issue

Hi,
I got asus memo pad 10 4.2 android. I figured out how to share files between users but when i plug in micro sd or USB thru otg only my "owner account" can see them and operate on file in them.
How do i give other users Access to external do devices? Because going to owner, pluging in, coping to obb, going to another account, coping it from obb and using it. Seems a bit silly.