Hide External Drive Icon

I have an Admin Account with 2 external drives used for backups. There is a second "User" account that is prohibited from access to the external drives. But, what I want to do is to simply not show the external drives at all - either in the Finder side-window or on the desktop. They would remain as not read or write access of "user" not Admin account. The drives show now but with a folder icon (not a drive icon) and with some kind of little red symbol on the bottom left sign that means access is not allowed.

How can I simply hide the drive icons from appearing at all in the non-admin user account? Oh yes, and 1 more constraint please - Sorry but no terminal commands. (If I don't understand it then I should not do it.)

Thanks