  Volunteer moderators (mods) play significant roles in developing moderation
standards and dealing with harmful content in their micro-communities. However,
little work explores how volunteer mods work as a team. In line with prior work
about understanding volunteer moderation, we interview 40 volunteer mods on
Twitch - a leading live streaming platform. We identify how mods collaborate on
tasks (off-streaming coordination and preparation, in-stream real-time
collaboration, and relationship building both off-stream and in-stream to
reinforce collaboration) and how mods contribute to moderation standards
(collaboratively working on the community rulebook and individually shaping
community norms). We uncover how volunteer mods work as an effective team. We
also discuss how the affordances of multi-modal communication and informality
of volunteer moderation contribute to task collaboration, standards
development, and mod's roles and responsibilities.
