Import execution-demo-content.xml file which you will get from the Execution Theme Pack. To get the Theme installed as shown in the demo you need to import a .xml file into your WordPress dashboard.
Go to Dashboard on the left Sidebar menu Tools > Import. Click on Import scroll to the bottom of the page at last you see WordPress. Click on Install now, after installing you will get Run importer, click on it now choose your .xml file, and click on the Upload file and import button. Then assign your author from an existing user (or) a new user and click on Submit. Now your file is successfully imported after that you need to enable Main Menu, click on customize (present in the top bar), a left sidebar will appear select Menu’s option, and then select Header Menu scroll to the bottom you will see Menu location select Primary your Menu is ready now. Please watch the video.