You can create a blogpost for your event by clicking the CREATE NEW button on the Admin page and going to the Basic Campaigns tab and choosing the Blog Post template. Then from the Design Campaign tab, fill the details in each tab:
Landing Page -> -> Settings
You can always preview your blog by clicking the ‘VIEW SITE’ before publishing, and then click ‘PUBLISH’ button at the top right corner of the campaign to go live.
Yay! You got your blogpost up and running!