Sidebar
A sidebar is a small section that is positioned next to long articles. Sidebar holds information about your website and about your articles. In this theme, you can find sidebar in the middle news area.

Click on Dashboard>Appearance>Customize>Theme Customization> Sidebar

Start Customizing sidebar settings.

Sidebar includes following three settings. They are as follows:
Enable Sticky Sidebar
Enable sticky sidebar refers to the sticky sidebar option at middle news section when you are scrolling down through the website. It is by default enabled.
Show Sidebar on Mobile & Tablet Devices
Show sidebar on mobile & tablet devices related to sidebar option to show or not to show the sidebar at mobile & tablet devices. It is by default enabled.
Show Sidebar After Main Content on Mobile & Tablet Devices
Show sidebar after main content on mobile and tablet devices is related to the display of theme sidebar after the main content. It is by default disabled but if you do not like the option of showing sidebar before main content on mobile & tablet devices then you can enable it.