Scripting symbols to appear and disappear

Does anyone have code to set up a situation where you can say when symbol “A” is clicked symbol “C” will show up at these coordinates. And that when symbol “B” is clicked that symbol “C” goes away and symbol “D” appears. I have multiple labels set up in the file and would like for the symbols that appear to stay when moving from label to label, I don’t know if that makes a difference.