How can I use proxies (private) with Custom Grabber?

Hi – I set up a custom grabber to scrape some contact data from a directory and was quickly blocked by the site that I was trying to scrape.   Does anyone know how to enable my private proxies when running the Custom Data Grabber module that I created.   At 4:02 in Looplines video Custom Data Scraper – Scrape Any Data From Any Website – Scrapebox 2.0 – YouTube he mentions that you can use them.  I have tried this setting https://www.screencast.com/t/1BfIqjvX but it does not seem to be enabling the proxies when I run the module.
Any insights/help would be appreciated.