As I don't play hangman often this variant is new to me, so a check of the rules has got me totally confused.

This variant is similar to the main Hangman game, the difference is that all players share the same word and hangman, instead of each having their own copy.
OK that makes sense, but later on it says.

Each player has a hangman on his or her board. Each time the player makes a wrong guess, an addition is made to the picture. Once the entire picture has been completed, which happens after 11 incorrect guesses, the player loses the round and may not guess any more in that round. The player then needs to wait until the round has been finished.
This doesn't seem correct - don't think it applies to this variant

Players cannot see the guesses made by other players. They can, however, see the current status of the hangman of each player by clicking on the corresponding player name on the game board.
Nor does this as you can see your opponents guesses and the hangman is shared