You can select page with sidebar templates. Here are the steps to create a page with sidebar.
- Go to WordPress Dashboard > Pages and click Add New
- Add page title and content. Then find Page Attributes box on the right side.
- Select Page With Sidebar as page template.
- Find Page Option box and select Page Sidebar you want to display on this page.
- Once you are done. Click Publish button
Add Widgets to sidebar
- To add widgets, go to Appearance > Widgets
- You will find your selected widget on the right side. Simply drag and drop widgets you want from the left side boxes into the sidebar box.

