You can only queue solo, or in a party of 3 or 6. So my friend and I cant play it together we’d have to queue alone since we dont have a 3rd, and there’s no pvp tab in the party finder 
Please AGS/LostArk, lift the queue restrictions, its a limited time casual PvP mode, the more people that queue for it the better, no reason to prevent groups of 2 from playing the mode without having to look for a 3rd in Area chat just to be able to play together.