I'm not sure about that. Here's how I would proceed with this task.
1. Save a web page as a single file in "Web page, single file" format
2. Upload this file to a group of devices using the "Files" tab of the Configuration
3. Setup the local URL (file:///mnt/sdcard/page.mhtml) as the main page for the Kiosk Browser
Note that saved web pages are often corrupted while saving.