Changing the size and shape of an elliptic line of sight

Hi, I am creating my first map in FGU and I am struggling to change the size of the elliptic line of sight that I have just created (see snapshot). I can move it by selecting it and then using the arrows, but I don't know how to change the size of the circle!!! I am using D&D 5e. Thanks!!!

There is no tool to modify a shape once created; only select and move/delete points. I would just delete, and redraw the circle.

Regards,
JPG

You can select the individual points and move them, but as Moon says, it is easier to just delete them and redraw it.