The sampler kits are installed in the Program Files folder, which cannot be written to by the software. Adding tags to the kits requires updating the kit files themselves.
To tag these kits, you can use the import content option and browse to your C:\Program Files\Forever\Artisan5\Kits and select the 4 new kits. This will import them into your Commercial Art Kits folder. Please note, you will see two copies of the content listed in your content manager.