Update:
Here’s a step by step
Download a newer version from here
It might not be exactly center because head is in the center not feet 
but maybe first test it before we correct it. We can also change it so that it doesn’t work when not in-game so that it can be running permanently on the computer. But first maybe test it. You need to move your analog stick after casting it I think to go back to controller mode.
step by step would be
-
Bind “1” to controller button as shown in the firsrt picture
-
Bind Inquisitor Seal to Right Click in Game on the Hotbar as shown in the second picture
now to run it
- run the exe
Now in-game
-
pressing a controller button should press 1
-
this in turn is read by the program/script which moves cursor and click Right Mouse Button
-
this casts Inquisitor Seal in the center where cursor now is
-
you now need to move analog stick or something like that to go back to controller mode