Each class has 1 free subclass, the rest have to be purchased from the marketplace either with a book (PHB has most of them) or individually.
You can also have character builder options and book compendium shared to you via campaign content sharing.
Or if you have a hard copy of a book, you can use DDB's free homebrew tools to create a subclass from it (just don't publish licensed content to public).
When I try to create a Wizard, of any kind, I can only chose the school of Evocation. Please Help.
Each class has 1 free subclass, the rest have to be purchased from the marketplace either with a book (PHB has most of them) or individually.
You can also have character builder options and book compendium shared to you via campaign content sharing.
Or if you have a hard copy of a book, you can use DDB's free homebrew tools to create a subclass from it (just don't publish licensed content to public).
I now I feel bad because I mixed up what is accessible in my personal account vs another campaign I'm in.