Share a folder with only one other user of my WDMyCloudHome_Disk and not other

I need to share a folder with only of one of the other users of my device. I have 4 users on it, if I’ll put the folder in “Family” all users can see it, I want share the folder with only one users, and not with a link, the user need to see the folder as its a personal folder of its space and not a link to share.
Any one try some solution?

New sharing like this is coming with the next firmware upgrade.
More information is here -