# Space hosts / Team Admins

All space hosts within hub.transition-space.org are automatically assigned the team admin role in Mattermost, empowering them to establish channels within their respective teams.

If you desire a Mattermost space to complement an existing hub.transition-space.org space, please submit your request to the [Platform Stewarding group.](https://knowledge.transition-space.org/books/chat-mattermost/page/further-help)

As a Space host or Team admin in Mattermost, you have the authority to:

<div class="flex flex-grow flex-col gap-3 max-w-full" id="bkmrk-create-channels-with"><div class="min-h-[20px] flex flex-col items-start gap-3 whitespace-pre-wrap break-words overflow-x-auto"><div class="markdown prose w-full break-words dark:prose-invert light">1. Create channels within your team.
2. Establish groups within your team.

</div></div></div>If you need to remove an individual from a Mattermost team, the procedure is to remove them from the Humhub Space. This action will automatically delete their membership from the corresponding Mattermost team, ensuring seamless management of team memberships.

**Adding people to the TNI team**

To do this you need to be an admin of [https://hub.transition-space.org/s/transition-network/](https://hub.transition-space.org/s/transition-network/)

Invite the user by email to sign up.

Once they have created a platform ID and signed in to the Humhub platform invite them to use this ID to sign into mattermost.transition-space.org and share the documentation with them: [https://knowledge.transition-space.org/books/chat-mattermost/page/apps](https://knowledge.transition-space.org/books/chat-mattermost/page/apps)