I had 2 existing domain names with web-hosting (1 primary and 1 secondary). I have not used the web-hosting package for the secondary one and have now ordered an additional 2 more domain name which purchase has completed.
Can I re-point my secondary hosting package to a different new domain name as I'm paying for a package not in use?
You would need to ask BT to cancel the unused hosting package, then order a new one which could then be activated using your new domain.