1. Add an out of the box Embed Webpart to your Modern Sharepoint page
  2. In the Website address or embed code section enter the following <iframe width="562" height="394" src="mininmode link here" tabindex="0" allowfullscreen=""></iframe> Where the text 'minimode link here' is replaced with the actual minimode link you wish to embed
  3. Change the width and height as required