https://wago.io/2JThfnb9V is necessary for the weakaura to personally notify you.
you can make a macro and add this code to it
/run WeakAuras.ScanEvents("CAUSESE_CHATSPAM", "nil")
Whenever you press the macro, it will automatically spam your mark in chat until you press it again or lose debuff.
Macro starts a yell in chat to notify raid that you need help on your rune.