Slack: Workspace Admin Control for Inviting Members

Environment

U-M Slack

Issue

I'm a Workspace Admin who wants to control who can invite members to a Slack workspace.

• What is the default, and how do I change it?
• How does this work with single-channel guest invitations?

Resolution

By default, Workspace Admins and current members can invite regular members to a workspace. However, only Workspace Admins can invite single-channel guests into their workspaces (and not multi-channel guests, as they aren't available in U-M Slack).

The default behavior for inviting regular members can be changed by the Workspace Admin to prevent current members from inviting additional members to the workspace.

Change who can invite members to a workspace

You must be a Workspace Admin to adjust this setting.

1. Click University of Michigan at the top of the left channel sidebar.
2. Hover over Tools & settings in the drop-down menu, and select Workspace settings.
3. Select the relevant workspace from the drop-down and click Open.
4. Click the Permissions tab.
5. Click Expand next to Invitations.
6. Check (or uncheck) the box next to Require admin approval.
   • If checked, only Workspace Admins will be able to invite members and guests.
     • If box is checked: Select "All admins, via Slackbot" under "Send invitation requests to...." Note that all invitation requests will be blocked and will not reach Workspace Admins.
   • If unchecked, Workspace Admins and current members will be able to invite members.
     • Only Workspace Admins will be able to invite guests.
7. Click Save

Expected behavior when "Require admin approval" is CHECKED

• Only Workspace Admins can invite regular members or single-channel guests.
• If a current member tries to invite a member or guest, they will receive the following message from U-M ITS Slack Attendant:

"Hello! Please ask a Workspace Admin to invite [EMAIL]; this workspace requires administrator approval. You can contact the Workspace Admins by using @admins in any channel."

• No one can invite multi-channel guests.

Expected behavior when "Require admin approval" is UNCHECKED

• Workspace Admins and current members can invite regular members to the workspace
• Only Workspace Admins can invite single-channel guests. Single-channel guests must be invited with a non-UMICH email address.
• No one can invite multi-channel guests.

Learn more about inviting members and guests to a U-M Slack workspace or channel.

Additional Information

For more information, the Slack Help Center provides documentation for managing permissions and inviting members.

Need additional assistance? Contact the ITS Service Center.