Hey guys, I'm currently creating a race similar to the Genasi, where the subraces are affected by another source. In this case, their surroundings, I've decided this race will each be good at certain things. So, for example, the Forest version will have Proficiency in Carpentry Tools and Woodcarver's Tools. However, my question is how I would make it, so those are the only two choices available upon adding it to the subrace racial traits? I know there's a way to add a drop-down list to choose from but, I don't think there is one for specific A and B options. Could anyone help with this?

You would have to add to Modifiers to that special treat.

• Modifier: Proficiency ->Subtype: Carpenter's Tools
• Modifier: Proficiency ->Subtype: Woodcarver's Tools

That’s if you want A and B. If you instead want A or B, follow the advice on “Options” that I gave to his person:

https://www.dndbeyond.com/forums/dungeons-dragons-discussion/homebrew-house-rules/98013-help-with-giving-race-2-proficency-choices-with#c6

Thank you so much for your help! Now if only I could do that for the specific language I made for them too instead of forcing them to add it via Tasha's...

Quote from Tamazara >>

Thank you so much for your help! Now if only I could do that for the specific language I made for them too instead of forcing them to add it via Tasha's...

 Sadly, there is no way for us to create custom Modifiers & Subtypes. However, homebrewed languages can also be added directly to the character sheets themselves. If you or your players click/tap the “Proficiencies & Languages” section of the sheet you (or they) will be able to “Add New Proficiencies->Custom->Language” and you can type in anything you want as an additional option right there on the sheet.