To create a new sidebar in your website, go to Essentials > Theme options > General Settings > Sidebars, for example:
Then you can edit your new sidebar from WordPress Panel > Appearance > Widgets, for example:
You can set the default sidebar for your website pages from Theme options > Pages > General > Pages Sidebar.
You can set the default sidebar for your Shop pages from Theme options > Shop > General > Shop sidebar.
If you want to change the layout of your page to add a sidebar, check the post below: