To add an excerpt to a new post:
In the Home menu, click Pages, then click your blog page.
Click in the top-right corner to open the post settings.
Click the Options tab.
Add an introduction or summary of the post in the Excerpt field.
Click Save, then finish creating your blog post.
In the Home menu, click Pages, then click your blog page.
Hover over a post in the blog page panel and click ..., then click Settings.
Click the Options tab.
Add an introduction or summary of the post in the Excerpt field.
Click Save.