Hmm...we can't find this setting yet, but we'll keep checking. Feel free to contact us for help.
Looks like you're signed in with a Gmail account. Please try again with your account that you use to access Google Admin.
The policy only applies to managed guest sessions.
Setting the policy specifies a list of extension IDs that are exempt from the restricted managed guest session clean-up procedure (see DeviceRestrictedManagedGuestSessionEnabled).
Leaving the policy unset means no extensions are exempt from the reset procedure.