see Olliges by Dresden or Neboh by Stuttgart
Not necessarily. Every action a player does is counted in the stats program, but not all of them show in the PDF. For example sets and digs aren't shown in the PDF but still registered. When you follow the live stats on VBL Ticker, you will see that in the beginning of the match there are not 6 or 7 players listed per team but one after another appears as the match proceeds as soon as she has an action. For example after the first rally maybe one team has only the server listed in their roster and the other team the receiver, setter and attacker if those were the only actions in that rally. That's why for example a blocking substitute can enter a match but not show in the stats sheet if she didn't have any ball touch/attempt.