This is the GUI implementation of the REST API Bitrix24 interface for data storage entities https://training.bitrix24.com/rest_help/entity/index.php
In your Bitrix 24 application, after BX24 API initialization:
<script type="text/javascript" src="//api.bitrix24.com/api/v1/"></script>must be inserted this code:
<script src="https://cdn.jsdelivr.net/gh/leonvv/bitrix24-entity-editor@latest/dist/build/static/js/ee.btn.js"></script>demo portal: https://eeditor.bitrix24.ru/marketplace/app/10/
login: poumxvjib@emlpro.com
pass: editor