Buttons in custom modules

Hello, I’m simply trying to create a custom module with some “Add” buttons that add elements to their corresponding lists. I used ExtensionWizard and Qt Designer to make the UI with the buttons. I didn’t use any coding, Python or otherwise, and am unsure how to add the functionality to the buttons.
Screenshot 2023-06-01 180157

You’ll need to write python scripts to that connect to the signals generated by the UI elements. It’s not hard, just review the examples and the python tutorials.