Comment 6 for bug 1726143

I found a thread at https://lists.ubuntu.com/archives/ubuntu-devel-discuss/2016-March/016298.html that mentions the libpam-smbpass package was removed. Guest shares can still be created through Nautilus, but password protected shares cannot. Shares can be manually created by editing /etc/samba/smb.conf, but this isn't a very GUI experience...