Creating a Field that is a List of a Custom Data Type

I’m creating two new data types: Badge and user_badges. I created my Badge data type first. The fields for Badge are attached in the image below:

Then, I created a user_badges data type. The fields are attached in the image below:

I want to add badges to the user_badges table, but I’m unable to do so. The dropdown menu doesn’t show up.

I want it to be like this dropdown, where the company name shows up as a dropdown menu

How do I do this?

I found the solution! You need to go into “Primary Fields” and switch it to your custom data type.