There are six other options below. The first one is about plug-ins. Find the penultimate one, "jabber/shout".
After entering the tab, the right hand side is the specific settings, and you can see that the first row is the yellow word "slay the propaganda"
Looking down from "Slaughter Call", there is a drop-down menu "Set Slaughter Call Content" above the yellow word "Skill Call" in the next row.
Click this drop-down menu and there are three options, 1, kill 2, kill 3 and be killed.
Click "Kill" to set it in the propaganda content.
There are variables on the panel, such as $ TERM is the killed object, etc. Watch and edit by yourself.