Since this feature is on probation, you only can activate it through the blogger in draft.
Below is how to create the blogger static page:
• Please visit the page of http://draft.blogger.com, then login using your blogger’s username and password.
• Click Edit Posts.
• Click the Edit Page tab, and then click the New Page button
• The post editor will appear, and please fill out as you want. After that, click Publish Page
• After that, an option will appear, whether you want that page on Blog sidebar, tab Blog, or No gadget. Give an option and then click SAVE AND PUBLISH.
• Please see the result on your blog.
• Done
For more details about this static page, please read at blogger in draft.
