Hide a Page
You can hide a page on the website by removing it from the menu. This will not delete the page, but will mean visitors can't find it.
This can be done, for example, to make the catalog page inaccessible until you are ready to publish it.
In the website editor hover the mouse over the menu and click on Settings
In the Settings dialog the Menu Entries will open, select the entry you want to remove and click on the red X icon.
The entry will be removed from the menu
Restoring the Page
When you are ready to make the page accessible again you can add the link back to the menu.
Click on Settings over the menu again and on the Menu Entries tab click on the blue + icon to add a new entry.
The new entry is added to the bottom of the list:
Fill in the Label and Actions settings, pointing the link to the same page as before.
You can then use the up and down arrows to position your new link in the right spot:
Click on Save & Close to persist the changes.