See Story 3 in linked confluence page

The following Blocks will allow the user to create content (when the user goes into the block settings)

Content List
A new button called "Create Parent" next to "Select Parent" (replace the existing "+ Parent" button with "Select Parent")

Video
A new button called "Create Video Content" next to "Select Content" (replace the existing "+ Video" button with "Select Content")

Embed
A new button called "Create Content" next to "Select Content" (replace the existing "+ Content" button with "Select Content")

Gallery
A new button called "Create Folder" next to "Select Folder" (replace the existing "+ Folder" button with "Select Folder")

Banner
A new button called "Create Banner" next to "Select Banner" (replace the existing "+ Image" button with "Select Banner")

Place
A new button called "Create Place" next to "Select Place" (replace the existing "+ Place" button with "Select Place")