Wait a minute, a 24/7 voice chat with experienced team members? How is that staffed?
Are you in some sort of huge-team highly-distributed setup with offices everywhere, or does the company expect people to work 24/7? (I'm guessing somewhere in the middle, but would be curious to learn more.)
The voice chat is available 24/7 but members of offices that have someone to onboard are usually participating, which helps. If a new team member works office hours in California, someone from CA will usually be there, or someone from adjacent time zones. If someone new from Germany is there, usually someone senior from that same office will participate as well.
Most activity in the voice chat takes place on workdays, but we don't treat the channel very formally. Sometimes some people are just hanging out and others are working. I used to join it when I was gaming a lot in the past to just chat/help out. Sometimes people would play multiplayer games there after work and still answer questions for those in other time zones. There doesn't need to be a rigid structure for this, just a friendly culture and a voice chat channel.
Are you in some sort of huge-team highly-distributed setup with offices everywhere, or does the company expect people to work 24/7? (I'm guessing somewhere in the middle, but would be curious to learn more.)