The only reason I ask is that the turn order is token_id based, and the GM sees all tokens on the order, regardless of page or layer. Players will not see tokens on the Tracker that are not on their page or on a layer other than the token layer. For example, the GM moving an enemy to the GM layer will cause it to disappear from the list in the player view. One other item of note, just for thoroughness, the turn tracker obeys the visibility of name plates. If a token name plate is not visible to players, it will not be visible for them on the Tracker.