[QUESTION] Training Ceritficates

[Chrizze]

hello! so i'm kinda new and i can't find the option to spend the training certificates, i think i remember it was somewhere inside the handbook but really can't find it so if you can help it would be great, thank you!

[vaesolis]

bottom of the screen buttons -> top row -> 'trial' (2nd from the right between 'goals' and 'handbook' -> 'hero training' tab (2nd tab inside 'trial' menu