Create a new post in Retriever
Go to Publish, Click Create new content
Step 1: Access the Publish panel
Step 2: Press "Create New content"
Step 3: Select which channel(s) you want to create a post for
Step 4: Create your content for one of the pages first adding text and media.
Step 5: Duplicate your post to the other networks to cross publish on all simultaneously
Step 6: Select if you want to save your post as a Draft, Send for Approval, Schedule or Publish now.