The rules for the Throne of Judement (AKA inquisitor Karamozov) say that all the members (Karamozov and retinue) count as a single model and fight with one profile.
The question is that since the inquisitor is armed with the sword, the servitor has a multimelta, the servo skull has a close combat weapon, and the other henchman has a laspistol, can the Throne use two one-handed weapons in close combat? Since it is a monsterous creature, can it fire both the multimelta and the laspistol at the same time?