Once this is done, the post template icon will appear in the blog editor.
Series 3 Blogs - Enabling post templates
Post templates allow you to create posts with special formatting and layouts in Series 3 blogs. This includes full-width images, side by side images, two or three small images in a row, as well as text options like columns and large pull quotes.
To start using post templates, you need to enable them in your account settings.
Turning on post templates
From the Dashboard click on Settings. Select the Blogs tab.Switch the post templates toggle to the on position. Click Update.
