I have run the drawio program normally through the open source program on github. I want to know how to add my own custom shape to the diagram program, so that the company’s employees can directly call
even so, this info is for draw.io for Confluence, you can take a look at this answer: Draw.io for Confluence - How do you create a custom library with custom shapes in draw.io?. It will work basically the same in the open source app diagrams.net.
Other support channels for the open source solution you can find here.