In my campaign I allowed the PCs to choose a bonus feat at first level, which is obviously not RAW.

I don't see any way in the character builder to allow this.  Does anyone know of a way?

Thanks

A workaround would be be homebrew an item and let the characters equip it.

This tweet was released recently:

Boons, charms, and more are coming. There are hundreds (if not thousands) of optional rules that we will absolutely get to.

Short term, upcoming changes will add customizing all elements - even if a spec. mechanic isn't covered, you can adjust to accommodate.

Thanks!