Is there a setting for players to see each other's

Character sheets?

Yes! Each player has to go to their own "All Characters" page, and click the icon that might be a book until it turns red. Red means the sheet is public!

Do note that it has been bugged and the sheets would loose it's public setting. This bug have been reported and worked on. If fixed I don't know right now

Yeah, every time you update a character, the book turns gray. (So the public character becomes private, unless you mark the book red again after updating.)

EDIT - I think the bug has been fixed! (Just tested by updating characters… after turning a few books red.)

You might have to toggle the book a few times to keep it Red, but it does work.

Does this make the sheet available for everyone else to see, or only the other players in the game?

It makes it visible to everyone. As of yet, there isn't a way to make the sheet available only to those within a game.

If it's a custom sheet, you might be able to wrap the whole thing in a private tag to only those in the game? I've never tried it, but it might work so only the players in the game can see.

Oh, that's genius. I've used private tags and notes for my GMs before.

It does Indeed work the sheet will just look empty to everyone else