Importing demos is one of the most accessible parts of the Blockspare plugin:

• You can find Design Libary on the Top Part of the edit section as you edit a post or a page.
• Just click on the Design Libary
• You will get the number of blocks, section pages, header, and footer section options to import for the demo.
• Just choose the design you like and click on it, Wait for some seconds and your import is completed

For more easier you could also watch the video on how to import the demo