Ciao Andrea,
To respect the LCN, you need to activate the following settings in Kodi (PVR and LiveTV Settings)
Use Channel Numbers from BackEnd
Use Channel Order from Backend
Then, it will perfectly work.
TVH will identify the sources and will tag them accordingly. You can change the Etichette by editing them in the Configurazione --> Canale EPG --> Canali and then you can enable just the tags you want in Configurazione --> Canale EPG --> Etichette deui canali
Once you do that, in the TV section of Kodi you can filter the channels by tag, and you will see the tags you created in TVH. I have created SD and HD channels, for instance.
Ciao