How to use the now.users function in now

if (!group.hasOwnProperty('receiveAnswer') ||  !group.receiveAnswer ){
      logger.warn("Invalid answer submission - currently not taking answers");
      return;
    }
    
    // Clean data
    answer = cleanAnswer(answer, group.question);

    // Verify qID
    if (group.question.qID != qID) {
      logger.info("Answer submitted for wrong qID");
      return;
    }

    // Send Answer to Admin
    var presenter = nowjs.users[group.presenter];
    presenter.now.receiveAnswer(that.user.clientId, name, answer);

    // Save Answer to DB
    SSM.saveAnswer(answer, group.question, name)

    // Send Answer to plugins
    /**
     * Hook fired when a answer is received.
     *
     * @event distribute
     * @for plugin-server.answer
     * @param {String} room The room that the question was distributed to
     * @param {String} clientID The client's id who submitted the answer
     * @param {String} name The client's name who submitted the answer
     * @param {Object} question An object with all the question information
     * @param {String} answer The answer submitted by the client

sessionAPI.getSession(that, sessionStore, function(err, session) {
    var room = session.room
      , nowName = nowjs.users[that.user.clientId].now.name
      , hasSessionName = session.hasOwnProperty('user') && session.user.hasOwnProperty('name')
      , name = hasSessionName ? session.user.name : nowName
      , group = nowjs.getGroup(room)
      , answer = data.answer
      , qID = data.qID;

    log('Answer Sent ' + name + '\n [' + that.user.clientId + ']', util.inspect(data));

    // If we had any errors, exit here
    if (err) {
      logger.error("Error retrieving session for nowjs connection [distributeAnswer]: " + err.message);
      return;
    }

    // Ensure that answer are allowed to be received
    if (!group.hasOwnProperty('receiveAnswer') ||  !group.receiveAnswer ){