How can I remove Push-To-Talk mic on/off pops?

Audacity 3 Help Forum Windows
2

Try the “Pop Mute” plug-in: https://forum.audacityteam.org/t/new-plug-in-effect-popmute/17499/1
Installation instructions: http://wiki.audacityteam.org/wiki/Download_Nyquist_Plug-ins#Installing_Plug-ins