Yes, you can apply for ‘Addition’ or ‘Reduction’ with form EV.  If the EV meter is single phase and needs to be changed to three phase, then the main meter needs to be changed to three phase as well.

Yes, you can apply for ‘Shifting’ with form EV, however both the Enemalta main meter and the EV meter will have to remain installed next to each other.

In that case you should apply for ‘Removal’ with form EV.