1. Set game goals: In "Open a Secret Room Built-in Menu", the goal of the game is to gradually expand your own secret room, unlock more types of props and facilities, and recruit more actors. Improve customer satisfaction and earn more revenue.

2. Initial settings: At the beginning of the game, you need to choose a theme for your secret room, such as horror, suspense, fairy tale, etc. Then set the game scene, including room layout, props and decorations.

3. Recruiting employees: In order to improve service quality, it is necessary to recruit some employees, such as designers, engineers, waiters, etc. They will provide professional support for the Chamber of Secrets to help you improve customer satisfaction.

4. Unlock new facilities: Gradually unlock new props and facilities by completing tasks or upgrading. These new facilities will add more fun and challenge to the secret room and attract more customers.

5. Marketing and promotion: In order to attract more customers, marketing and promotion is needed. This includes advertising on social media, offering coupons, partnering with local businesses, and more.