In order to develop a team chat app, you can follow the basic protocols mentioned below.

1. Define your requirements and features.
2. Use the right team collaboration tool.
3. Design the UI and develop the backend.
4. Test and deploy your app. If you feel these steps are too time-consuming, then you can easily integrate team chat app APIs and SDKs from providers like MirrorFly, Twilio, Agora, etc. These SDKs can be integrated with your app in less than 20 minutes, saving you a ton of money and time.