AdminTalkover

need [ANY] VoiceannounceEX (VoiceHook)
https://forums.alliedmods.net/showthread.php?p=2177167?p=2177167

Command
sm_talkover - Toggle on/off admin talkover

ConVar

talkover_enable - 0 - disabled, 1 - enable plugin
talkover_default - 0 - disabled by default use command to enable, 1 - enabled by default use command to disable
talkover_prefix - Set your chat prefix for this plugin.

Commands for Overriding Command Access
https://wiki.alliedmods.net/Overriding_Command_Access_(SourceMod)

"sm_talkover" & "talkover_immunity" or flag ADMFLAG_CHAT 'j'

like [CS:GO] JailBreak - Be quiet, please!
https://forums.alliedmods.net/showthread.php?t=276696
but for admins and [ANY]