Click on the green flag. Drag the point from the middle(origin) where ever you want Click the point to duplicate it if more needed. (hint: clicking the cloned point will give you a differ color, while clicking the original gives the same color)
---I'm thinking on how i can make it so when you put the point where you want, you can have it tell you what the ordered pair is.That MAY be a feature I will add if i figure out an easy way to do it :)