1. Click 'Analysis' in the game you want to share.
2. Click 'Share'
3. Copy PGN
4. Click 'Insert chess game or diagram' button.
5. Paste PGN in 'Load from PGN' -> click 'Add Game(s)'.
6. Click 'Insert'. 
7. The game inserted looks like this. If you want to edit it, click the game and click 'Insert chess game or diagram' button again. 
https://www.chess.com/live/game/107268083548