How to load an XML "Unattend answer file" into the current Windows 10 installation?

Question

There are a few possible customization for Windows 10 Enterprise, such as Custom Logon.

This page explains indeed how to create such a file using DISM for a future Windows installation image, but how to simply apply such XML files to an already installed Windows 10 Pro or Enterprise system?

Let's assume this file is saved into myconfig.xml:

<settings pass="specialize">
    <component name="Microsoft-Windows-Embedded-EmbeddedLogon" processorArchitecture="x86" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
      <BrandingNeutral>17</BrandingNeutral>
      <AnimationDisabled>1</AnimationDisabled>
      <NoLockScreen>1</NoLockScreen>
      <UIVerbosityLevel>1</UIVerbosityLevel>
      <HideAutoLogonUI>1</HideAutoLogonUI>
    </component>
</settings>

How to load it?

Is there a:

bcdedit ... --file=myconfig.xml

or another way?

Note: I have already done: "Turn Windows Features On and Off" > Device Lockdown > Custom logon.