XGBoost Tree for Regression Flowchart

Hi, I currently writing an research paper and I’m using XGBoost Regression to do time series forecasting. That paper required a flowchart that show how XGBoost works to do forecasting. Is there any XGBoost flowchart that shows how to build an XGBoost Tree for Regression? I need it for my reference. I had trouble finding it on the internet.
Thank you.