How to refer to another field in another schema in Sanity.io

export default {
  name: 'referExample',
  title: 'A reference to another field in another schema',
  description: 'For example, to show an address on this page but have it editable on another document',
  type: 'document',
    {
      name: 'address',
      title: 'Address',
      type: 'text',
      readOnly: true,
      initialValue: REF_TO_FIELD_ID_OR_SOMETHING, // this would somehow reference the 'address' field from the 'settings' page
      description: 'This field is set on the settings page',
    },
  ],
};

// chrishResource.js

export default {
  name: 'chrishResource',
  type: 'document',
  fields: [
    {
      name: 'address',
      title: 'Address',
      type: 'text',
    },
  ],
};

// chrish.js

import React, { useState, useEffect } from 'react';
import PatchEvent, { set } from 'part:@sanity/form-builder/patch-event';
import FormField from 'part:@sanity/components/formfields/default';
import { TextArea } from '@sanity/ui';
import sanityClient from 'part:@sanity/base/client';

const client = sanityClient.withConfig({ apiVersion: '2021-05-13' });

const AddressInput = React.forwardRef((props, ref) => {
  const { type, onChange } = props;
  const [address, setAddress] = useState();

  useEffect(() => {
    client.fetch(`*[_type == 'chrishResource'][0].address`).then((res) => setAddress(res));
  }, []);

  return (
    <FormField label={type.title} description={type.description}>
      <TextArea
        ref={ref}
        value={address ?? ''}
        readOnly
        rows={type.rows}
        onChange={(event) => {
          onChange(PatchEvent.from(set(event.target.value)));
        }}
      />
    </FormField>
  );
});

AddressInput.displayName = 'AddressInput';

export default {
  name: 'referExample',
  title: 'A reference to another field in another schema',
  type: 'document',
  fields: [
    {
      name: 'title',
      type: 'string',
    },
    {
      name: 'address',
      title: 'Address',
      type: 'text',
      rows: 4,
      inputComponent: AddressInput,
      description: 'This field is set on the settings page',
    },
  ],
};