private void createFunctionsCheckBox() {
		diffFunctionsCB = new GCheckBox("Functions", diffFunctions);
		diffFunctionsCB.setName("FunctionsDiffCB");
		diffFunctionsCB.getAccessibleContext().setAccessibleName("Function Differences");
		diffFunctionsCB.setToolTipText("Highlight function differences.");
		diffFunctionsCB.addItemListener(event -> {
			diffFunctions = (event.getStateChange() == ItemEvent.SELECTED);
			// Functions check box controls both functions and function tags.
			diffFilter.setFilter(ProgramDiffFilter.FUNCTION_DIFFS, diffFunctions);
			diffFilter.setFilter(ProgramDiffFilter.FUNCTION_TAG_DIFFS, diffFunctions);
			clearStatusText();
		});
	}
Create a panel for the checkboxes to indicate the filter settings.
Ghidra/Features/ProgramDiff/src/main/java/ghidra/app/plugin/core/diff/ExecuteDiffDialog.java