I want to create schema form in Sanity headless CMS , this form to upload course , inputs for the form are ( title , description ) and chapter field will include inside it lesson filed which is name and video , how to implement this ?
To create a schema form in Sanity for uploading a course with the specified fields (title, description, chapters containing lessons with name and video), you'll need to define a custom schema for your content. Below is a step-by-step guide on how to implement this in Sanity:

### Step 1: Set Up Sanity

If you haven't already set up a Sanity project, you can do so by following these steps:

1. Install the Sanity CLI if you haven't already:
   ```bash
   npm install -g @sanity/cli
   ```

2. Create a new Sanity project:
   ```bash
   sanity init
   ```

3. Follow the prompts to set up your project.

### Step 2: Define Your Schema

Once your Sanity project is set up, navigate to the `schemas` directory in your project (usually located in `./sanity/schemas/`). You will define your schema here.

1. Create a new file for your course schema, e.g., `course.js`.

2. Define the schema for the course. Here’s an example schema that includes your specified fields:

```javascript
// schemas/course.js

export default {
  name: 'course',
  title: 'Course',
  type: 'document',
  fields: [
    {
      name: 'title',
      title: 'Title',
      type: 'string',
      validation: Rule => Rule.required(),
    },
    {
      name:
In Sanity headless CMS, you can create a form with the inputs (title, description) and a chapter field which includes a lesson field (name, video). To do this, you will need to create a form field for the chapter, then create a form field for the lesson. You can then map the chapter field to the course structure and map the lesson field to the file upload. This should allow you to upload the course with the specified inputs.