In your HubSpot account, navigate to Content > Website Pages.
In the top right, click the More tools dropdown menu and select Content staging.
In the top left of the content staging tool, click the Domain dropdown menu to select the domain where the page you're replacing is hosted. This will also be the domain where your new page is published and hosted.
Select the type of page you want to stage:
Click the Unmodified tab to stage a live page.
Click the Staged draft tab to stage a new version of a staged page still in draft mode.
Click the Staged proof tab to stage a new version of a staged page published to the staging domain.
Hover over the page you want to stage, then click Stage.
In the dialog box, select Stage blank page, then click Stage page.
Select a template for your new staged page. Keep in mind that any changes to your templates, global content, or stylesheets will impact existing live content.
Edit your page's content in the page editor. After you complete your edits, click Publish to staging.
Click Publish to staging to return to content staging or Publish and keep editing to continue editing your page.