Of note: BitCurator 5.x does not include the "cifs-utils" package out of the box. This is required for accessing these types of shares; if you don't have it installed, you can install it from a terminal with:
sudo apt-get update
sudo apt-get install cifs-utils
If your attempts had not been previously working, you should now be able to follow the file explorer GUI guidance in the previous reply. It should also now be possible to create a permanent mount point, store your smb credentials and workgroup name in a file, and place a line in /etc/fstab to automount the share any time the system is up. It's likely undesirable to have your credentials stored plaintext on the machine, although there is at least one utility that can assist in managing an encrypted version of that, as well. Let me know if any of that is interesting and I can follow up off-list.
We should probably update the documentation to address some of these items for modern LTS installs.
Kam