How to change a workspace privacy?

You can make a workspace private from the share panel. Please follow the instructions mentioned below:

1. Open the workspace you would like to change to private.
2. Click on the Share button on the top toolbar
3. Select Specific Users (or any other option than ‘Public’) option on the share panel
4. Close the share panel

Your workspace is now private and will not be able to access publicly by anyone.

Make a Workspace Private

Find out how to share a Workspace in a public channel: How to change a Workspace to Public?