Presentation Studio Settings
The Presentation Studio add-on's admin settings page with an HTML editor for a custom 404 page.
The Presentation Studio Settings page is the add-on's settings page for organization admins. It currently contains a "Benutzerdefinierte 404-Seite" ("Custom 404 page") section with a multi-line HTML editor: the HTML entered here is shown when visitors open a presentation that doesn't (or no longer) exists.
A "Speichern" ("Save") button applies the draft, and a "Zurücksetzen" ("Reset") button removes the stored HTML entirely; resetting first asks for confirmation via the "Benutzerdefinierte 404-Seite zurücksetzen?" ("Reset custom 404 page?") dialog, since the saved HTML is irrevocably removed.
As long as no custom HTML has been saved, the "Zurücksetzen" button stays disabled.