First you create tables at TablePress menu (the plugin is included in theme, it will be installed while importing dummy data, or you can install it manually).
See screenshot: https://postimg.org/image/3bkrec174r/
While you are in a page, add an “table” element in order to have tables. See screenshot: https://postimg.org/image/5tyss4gu7f/
After selecting it, the option to choose one of your current tables, will unfold in the left sidebar.
