The software's documentation is directly embedded into the administration interface: clicking on the "Help" button from any back-office page reduces the main interface's width in order to add a new column on the right, which contains the documentation for that section of the back office.
Another click on the "Help" button closes the contextual help. If you do not close the help column, PrestaShop Ready understands that you want it displayed on every page of the back office, and thus will keep the column open until you have clicked to close it.
If the browser's display zone is less than 1220 pixels wide, then PrestaShop will open the contextual documentation in a new browser window rather than reducing the screen space dedicated to the main interface.
If you don't find answers to your questions in the documentation, do not hesitate to chat with our support team!