Login to Dashboard
Click Site you want to disable Auto Deploy.
Navigate to [Site settings].
Click ON to activate [Auto Deploy Artifact]
Check its status is Enabled.
Click toggle swithch to turns it to Disable.
Let's check Auto Deploy will not work.
Go back to Site Overview and Scroll down to Generate Artifact section
Check [Auto Deploy] icon is not shown, then click Generate
Check Artifact is manually deployed and published