In order to have this display Latest Stories + Calendar in your Homepage exactly like the demo site, follow this simple instructions:

1- After clicking on Visit Website from the backend of your site, click on the option to edit this page as shown in the image below.

2- Enter the following piece of code: [widget=Bootstrap Theme - Display - Recent Articles with Sidebar] 


3- Choose "Custom Homepage Content" for one of the sections in design settings. 

4- Go to Toolbox/Sidebar Manager and search for the "Post Search Result sidebar. Add the Bootstrap Theme - Display - Events Calendar widget by dragging and dropping to the sidebar as shown bellow.




5- Save changes and you are done.