Eye-tracker calibration dots position


I am writing a code for an experiment using EyeLink 1000 on Psychopy coder.
When doing the eye-tracker calibration the dots are displayed at the very extreme sides/corners of the screen, I would like to have a narrower space to display the calibration dots in order to the eye-tracker to still detect the pupil. Does anyone have an idea of how to change this?

Thanks for your help!