Manage team and channel members - Mattermost

System admins can manage channel configuration in the System Console, including:

Management: Manage synchronization, moderation, and membership settings.
Promoting/demoting Team and Channel Admins: Team admins and channel admins can be demoted via the System Console.
View channel members: System admins can view members of a channel without having to join the channel.
Member count: Total member count in a team or channel.
Archive channels: System admins can archive channels without having to join the channel.

Teams

To view and manage team information, navigate to System Console > Teams. Teams can be managed by Group Sync or Invite Only. The type of management in use may affect the management options available for that team.

Select a team to view its configuration options.

Team profile

The name and description of the team.

System admins can archive or unarchive the team from within User Management > Teams > Team Management. Archiving a team makes its contents inaccessible for all users. All related information is archived, including posts from the database. Before archiving a team, we recommend that you perform a database backup.

Archive a team

Select Archive Team, then select Save. Select Archive when prompted to confirm the team archive.

Alternatively, system admins can use the mmctl mmctl team archive to archive teams. See the mmctl product documentation for details.

Unarchive a team

Select Unarchive Team, then select Save.

Alternatively, system admins can use the mmctl mmctl team restore to archive teams. See the mmctl product documentation for details.

Team management

When Sync Group Members is enabled, the Synced Groups list is visible and additional groups can be added.
When Sync Group Members is not enabled, invitation limitations can be selected.

Groups

You can add and remove groups, as well as promote or demote group members to team admin/member roles.

Members

A list of all members in a channel is visible to system admins. Members can be added and removed from the team members and be promoted or demoted to a team admin/member role. Use the role Filter to refine your search results. You can use one filter, or combine filters to search by multiple roles:

Guest
Member
Team admin
System admin

Channels

To view and manage channel information, navigate to System Console > Channels. Channels can be managed by Group Sync or Manual Invites. The type of management in use may affect the management options available for that channel. Use the Filter to refine your search results. You can use one filter, or combine filters to search by channel and management type:

Public channels
Private channels
Archived channels
Channels that are synchronized to an AD/LDAP Group
Channels with users who were invited manually (not synced from LDAP)

Select a channel to view its configuration options.

Profile

The name and description of the channel. To archive the channel, select Archive Channel > Save. The channel is still searchable in the Channels list. To unarchive the channel, select Unarchive Channel and Save.

Channel management

When Sync Group Members is enabled, the Synced Groups list is visible and additional groups can be added.
When Sync Group Members is not enabled, you can select whether the channel is Private or Public.

Advanced access controls

Advanced access control settings enable system admins to restrict actions within specific channels. These actions include:

Make channel read-only: Read-only channels enable system admins to turn off posting in specified channels.
Restrict reactions: Turn off the ability for members and guests to post reactions.
Restrict channel mentions: Turn off the ability for users to post channel wide mentions (@all/@channel/@here) in specified channels.
Channel member management: Only admins have the ability to add and remove channel members in the specified channels.
Bookmarks management: Only channel and system admins can manage channel bookmarks.

These settings are modified in System Console > User Management > Channels.

<Note>

These settings are applicable only to Guests and Members. System, team, and channel admins aren't affected. If you wish to grant posting ability to a specific member, you must first promote that member to channel admin.

</Note>

The availability of advanced access control settings can also be affected by existing system and team permissions configurations. If there are existing configurations that override the channel settings you would like to apply, it will be indicated in the user interface. These settings can then be adjusted in the relevant panel in the Permissions section of the System Console.

Configure a channel so that members can post/reply/react but guests can only read and react.

Navigate to System Console > User Management > Channels.
Select Edit next to the name of the channel you want to configure.
In the Create Posts panel, uncheck Guests.
In the Post Reactions panel, uncheck Guests if required.
Select Save.

The channel is available for all members and guests to access, but guests can only read messages and react to them.

Create an Announcement Channel where only Channel Admins are able to post (read-only).

Create a new channel (either Public or Private).
Navigate to System Console > User Management > Channels.
Select Edit next to the name of the channel you just created (you may need to search for it).
In the Create Posts panel, uncheck Guests and Members.
In the Post Reactions panel, uncheck Guests and Members.
Select Save.

The channel is available for all members and guests to access but only Admins can post to the channel.

Groups

You can add and remove groups, as well as promote or demote group members to team admin/member roles.

Members

Guest
Member
Channel admin
System admin

<Note>

From Mattermost v11.5.2, system admins can set the complete membership of a channel in a single API call. The server computes the diff against the current membership and adds or removes users as needed. See the API documentation for details.

</Note>