Just something that came to mind, maybe an idea to have a VA Discord channel?
it's free to use and it's very community orientated, mic quality is pretty decent it's easier and better to use than Team Speak and other voice chat services, it also has ideal group & ub group sections you can add as many text & voice channels as you like Nitro is not a must but it can offer other helpful services.
Info about Discord and what it actually is:
Discord is an American VoIP, instant messaging and digital distribution platform designed for creating communities. Users communicate with voice calls, video calls, text messaging, media and files in private chats or as part of communities called "servers."
Initial release: May 13, 2015; 5 years ago
Stable release: 74432
Available in: 27 languages