Control who can send kudos to the entire channel. By default, everyone can send kudos to all. Limit this option to Admins Only or No Members.
Who can use this: Workspace Owners and Admins on every plan. Works the same for Slack and Microsoft Teams workspaces.
For an overview of the whole feature, read the Kudos Guide.
Edit Give Kudos to All permissions
Open the Web App.
Go to Settings (or Channel Settings on Enterprise), then the General section.
Scroll down to the section Give Kudos to All Permissions.
Select the appropriate permission type:
All Members
Admins Only
No Members
Click the Save button to confirm changes.

