How to track exits from a scene in telegraf?

Question

JavaScript

There is an external scene StartScene.

It starts the other two scenes Requests and Signin.

How to track the exit from these scenes in StartScene?

const bot = new Telegraf(CONFIG.BOT_TOKEN);

// Создаем сцены
const requests = createRequestsScene();
const signIn = createSignInScene();
const startScene = new BaseScene("StartScene");
const stage = new Stage([startScene, signIn, requests]);

// Настройка бота
bot.use(session());
bot.use(stage.middleware());

bot.use(async (ctx, next) => ctx.scene.enter("StartScene"));

startScene.enter(async (ctx) => {
  // Проверка на доступ
  await Helper.checkUser(ctx.message.from).then(async ({ isHaveAccess }) => {
    if (isHaveAccess) {
      ctx.scene.enter("Requests");
    } else {
      ctx.scene.enter("SignIn");
    }
  });
});

bot.launch().then(() => console.log("Bot started!"));