[Samba] share home to more than one user

[f]

Hi, i'm trying to share the home directory of one single user to some
other users of my samba server, and don't know how...

My problem is that the [homes] section of smb.conf includes all users
of my samba server and this is right, but i want to do an exception
with one user, i need that this user home's directory can be shared to
some other users...

i tried to create a new share using a home's directory as a path to
permit other users to read and write it, but it dosn't work cause says
that the "resource is in use"

thanks in advance

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f