You can access your staging environment to edit your Managed WordPress Website without having to change the live Website.
The staging Website will contain the content from when you first created your staging Website, or from the last time you performed a pull from production to staging.
Don't see the drop down menu? You might be in List view.
To change to Grid view, click the icon at the top-right of your screen.
This will launch your staging environment. You can now work on your Website without having your changes go live.