It is useful to put unfinished pages into draft mode.
Here is a short How-To:
Login to your Style Guide
Press the edit button or use the shortcut CMD + E
On the right site at each page, you`ll have the eye icon.
Press on it to activate the draft mode for this page
Close the edit mode and reload your Style Guide
You will see the page is now in Draft mode.
Press the Draft button. to set the page live again.