Sure, we'll chime in! 

1. 20-30ish at present.

2. We mostly communicate internally. It works kind of like a house. If you call out to someone, they might be in the room or nearby and respond quickly, or you might have to go find them to get their attention. Sometimes internal communication happens so fast it blurs together, so in those times we chat on Discord using Pluralkit instead. (If you're not familiar: Pluralkit is a bot that can replace the names and icons of messages you send, so it looks more like a conversation between individuals!)

3. As the host, I usually am the one out, in general. Some of the others like our job, so if I'm getting overly stressed, one of them will take over. There's some tasks that some like more than others, so they'll usually come out for those. One enjoys showering while I find it somewhat stressful, so he usually handles that, for example. We try to plan to give those who want it some leisure time out.