Chess problems

Everyone knows how to set up a chess problem on the board to study and try to solve, but can you do that here? I saw a post where someone had set up a chess problem, white checkmates in 2 moves, and I'd love to be able to set to set up that problem on Chess.com. Is there any way to do this? 

IDK. I run thru the chess puzzles as practice. Didn’t you send a similar chess problem a year or so ago?

How have you been? We just hang out in our old people ghetto

I've been pretty good. Hey, I have something to ask of you, off the topic. Every time I play chess with my brother he beats me. He's on chess.com so you can see all the moves. How about you and him play a game? I know you'll beat him.

Ok. Maybe I could come over and pretend to be you.

I can’t figure out the problem. In just 1 move

That would make me a cheater. And we play a 7 day game, and you wouldn't want to hang around my house that long!

Ok. I’ll play him

Approximate plan:

1. Click on Insert chess game or diagram on the post editor's bar 
2. Open Setup Position. Add pieces on the board 
3. Go to Moves tab. Drag pieces to make moves for black and white
4. Go to Theme. Mark the Puzzle checkbox
5. Click Load

A dumb example: