Open two ports when we start Jupyter Lab through Open Ondemand

We have received a request to use Jupyter Notebook to communicate with a web server. When we start Jupyter Lab through Open Ondemand, is it possible to open a second port, and reserve the second port for the web server or directly run the web server on the second port?

Yes, you can checkout how we run Juypter with Spark (which boots a web stack).