There are a number of training centres in Ireland.

Manresa Training Centre

https://www.manresa.ie/courses/spiritual-direction-formation-courses/diploma-in-spirituality

Anamcharadas

https://anamcharadastraining.com/

An Croi

https://ancroi.ie/professional-diploma-in-spiritual-guidance/

Supervision Training for Spiritual Directors

https://ancroi.ie/training-programmes/professional-diploma-in-wisdom-supervision/