Thanks for all our users for their patience whilst we investigated this option. Unfortunately, due to how our eye tracking algorithms are designed, any changes in one calibration point will affect all the others so it’s sadly not a simple case of merely adjust “one point”.
Accordingly, to implement this feature requires a significant rewrite of our algorithm code and so, for the time being, is not something likely to be available in the near future. Apologies for the disappointing news, hopefully, your gaming and interaction experience are not unduly affected.