Here are some directions to help you understand how you can update the workspace settings.
Easily customize your workspaces
In order to update your workspaces, the first thing is to log into your ContentStudio account.
Go to Settings and click on the Basic Setting which is located under the Workspace settings.
Now, you can add the Basic Detail of your workspaces which includes Workspace name, slug and time zone.
While creating more than one workspaces, you will be able to set a time zone for all workspace separately.