I've Installed Macros, now what?

This may sound like a stupid question, but now that I have installed macros in my game (Door Knocker, Matrix Math, Vector Math, and Path Math), how do I actually utilize them? I may be daft, but I had thought they would just become available for use while running my games, but it does not seem to be the case. I'm particularly having problems getting doorknocker to work, I cannot even bring up its UI, what am I missing?

Did you check your journal for the sheet that Door Knocker creates?  There should be instructions there. And, just to be clear, you are referring to a script/mod.  Macros are usable and writable by anyone (just to get the terminology straight).

Door Knocker might be giving problems. The latest updates to the way color is handled on drawings may have broken DK temporarily. Scott has announced he will look into as soon as he has the time.