How to post puzzles?

How to post puzzles in chess.com??
https://support.chess.com/article/316-how-do-i-put-a-game-or-puzzle-in-a-forum-post

How to post puzzles in chess.com??
https://support.chess.com/article/316-how-do-i-put-a-game-or-puzzle-in-a-forum-post
I have seen people posting puzzles, It seems interesting, may I know how to post em?