2 way player editing profiles

How do you edit/add pitches and stats to a position player when making him a pitcher too? I want to make a position player into a pitcher but when you bring them to the mound all he has is a fastball and change up and pitch’s very slow. I’ve made a pitcher into a 2 way player playing the infield and edited his stats and it’s easy. If he gets the 2 way player designation can you then add/edit pitches?

Any comments would be appreciated

I have not been able to do that. Only the other way around

Thanks. I read somewhere online that you can only make a pitcher a 2 way player not a position player.