Step 1: Sign Up for Adalo and Create a New Project

• Visit Adalo's website and sign up for an account if you don't already have one.
• Once logged in, click on "Create New App" to start a new project.
• Select whether you want to create a mobile or web app and provide a name for your project.

Step 2: Set Up Your App's User Authentication

• Navigate to the database section of your Adalo project.
• Add a "Users" collection if it's not already there.
• Add fields such as "Name", "Email", and "Password" to the "Users" collection.
• Go to the "Sign Up" and "Login" screens and connect them to the "Users" collection.

Step 3: Integrate the Video Calling API

• Find a video calling API provider, such as Twilio or Agora.io, and sign up for an account.
• Obtain the API key and any other necessary credentials from your chosen provider.
• In Adalo, navigate to "Settings" and then to the "API" or "External Collections" tab.
• Add a new collection or API integration for your video calling service.
• Configure the endpoints and actions, such as creating a new video call session, using the API documentation from your provider.

Step 4: Design the User Interface for Video Calls

• Go to the Adalo design editor and add a new screen for video calls.
• Drag and drop UI components such as buttons and text fields onto the screen to create a layout for starting or joining calls.
• Add a web viewer component to embed the video call interface provided by your API.
• Ensure that the web viewer component is configured to load the correct URL or session ID for the video call.

Step 5: Implement Call Management Features

• Set up actions and workflows to handle starting, joining, and ending calls.
• For example, add an action to a "Start Call" button that creates a new video call session and redirects users to the call screen.
• Similarly, configure a "Join Call" button to allow users to enter an existing call session.
• Use conditional logic to manage the call state and ensure users can only join active sessions.

Step 6: Test and Deploy Your App

• Preview your app in Adalo to test the video call functionality.
• Make sure to test both the starting and joining call workflows to ensure they work as expected.
• Check for any issues or bugs and fix them before proceeding to deployment.
• When you are satisfied with the functionality, publish your app to the desired platform (e.g., App Store, Google Play, or as a web app).