FATE or clusters farms: /shout saying you are lfg for fates or clusters, if that doesn't work say you are starting a fate or cluster party.

CE: /say lfg, or start inviting others who say lfg.

Castrum: When you've queued in, do /say lfg, or start inviting others who say lfg.

DR: Just queue for it by talking to the NPC.

DR Savage: Join discord servers that do it, or keep an eye on party finder in case someone setup a party for it.