To add sidebar to your page, you just need to change the template of your page to a one with sidebar.
To do that, open your page in Edit mode and then from the Page Attributes change the Template. For example:
Edit Page > Template
Note:
By default your page will have the Theme default sidebar, which is set from:
Theme options > Pages > General > Pages sidebar.
You can set the default sidebar for your Blog pages from:
Theme options > Blog > General > Blog sidebar.
You can set the default sidebar for your Shop pages from:
Theme options > Shop > General > Shop sidebar.
If you’re looking to choose custom sidebar for a specific page you can do that from the page options (in Edit mode), for example:
Edit Page > pixfort Options > Custom Sidebar
Related article:
If you want to change the layout of your page to add a sidebar, check the post below: