Software development and extra modules

We are using this video and voice call system: https://codecanyon.net/item/livesmart-server-video/47633218. The server is running on Ubuntu with a PHP management panel. We are looking to have the following improvements made. For these improvements and the scheduling system, we are offering $160, and afterward, we will open an additional task for $100 to integrate the banking transactions API. We are seeking developers proficient in Node.js and PHP who are highly skilled in their work. This is an ongoing project with continuous development, so it offers a long-term opportunity to earn in small but frequent tasks.

Details of the arrangements and improvements we want are written in the attached word file.