by scottgus1 » 17. May 2019, 14:05
The Virtualbox manual section 10.1.3 says that if the environment variable VBOX_USER_HOME is set to a particular folder on the host OS, that Virtualbox will look in that folder to find it's configuration and guest list.
Google how to set environment variables on you OS. Set VBOX_USER_HOME to point to a public folder that all accounts can access, and save your guest also in a public folder (see the main Virtualbox window, File menu, Preferences, General, Default Machine Folder, for where to make new guests).
Theoretically, logging in a different PC account, Virtualbox will see the environment variable, look in the public folder for the configuration file, and load up that list of guests.