Commands:
/staffchat <message>
/sc <message>

Documentation:
If you are using the SECOND SKRIPT you can change the placeholder to
your rank plugin placeholder.

Tested Placeholders:
"tab_tabprefix"
"tab_tagprefix"
"tab_tabsuffix"
"tab_tagsuffix"
"luckperms_prefix" It may not be colored prefix.