Learnable abilities (Reforged)

[kokon]

I can see that i can assign any number of abilities to a hero.
But as far as I can see if I assign 6 abilities to a hero via shift. I can only choose between 4 in the learn menu (+)

Can I somehow make 6 abilities that can be learned via learn menu?

 

[polardude]

eveny if you add 6 abilitie with shift then the hero can only have 5