I’m currently the lone staff moderator but I have trained people to cover for me and I have a team of volunteer moderators.
When we had a team of moderators, most came from our community. They were people that were already active in our community, helping others, had the voice we wanted, etc. Same for our volunteer moderators. I currently have 4 wonderful VMs.
For the VMs, I created a private category that only we can view/post. The pinned topic is the guidelines and “how to” things. This is where they can ask questions, escalate things to me without doing it in the public forums, and I can give guidance or tips as needed. The private category has been invaluable and I highly recommend it.