Linking FATEs in /yell or /shout or another channel

You can't exactly link a FATE by name, but you can link a target-able monster and it's map position in a zone to chat.
If the FATE has a target-able monster, like the NM World FATES, then just target that monster to link. Otherwise type the FATEs name, in short form if it's a long name.
To link:
Target, type <t>

Position, your current position, type <pos>

To shout or yell, type /sh or /y

NOTE: The <pos> command will create a clickable "link" in the chat which will let a player click and open the map to the zone and place a map pin at the <pos> automatically. Also, all of the chat commands use lower case for the letters. Also, if you receive a <pos> message in chat, and then wish to relay the message to others, then click the <pos> to drop a map pin on your map, then use the command <flag> to send that map pin out in your chat message.

So, if you were to come across an A-Rank The Hunt mark, and wanted to let the players in the zone know about it, then target it, get close enough to it to not aggro it, and type:
/sh A-Rank <t>, is at <pos>, please come help kill

Use /y only for a message to go out in the general area you are at, which has a bit further range than /say and shows up in a bolder color text. Typically you would only use /y if you were say announcing a "pull time" for the target monster or such to just the players around in the general area, otherwise use /sh so everyone in the zone can see the message.
If you are a member of a Free Company, you can let you FC mates know via /fc
If you are in other Link Shells, then refer to your Link Shell list for the channel number of each, then you can type /l1 for the first, /l2 for the second, /l3 for the third and so on
Here is a list of all slash chat commands:
https://ffxiv.consolegameswiki.com/w..._text_commands
Here is a list of the <> chat commands:
https://na.finalfantasyxiv.com/lodes...d/placeholder/