Support One-to-Many relationship custom field on create screen

Part of our process for writing features is to essentially create a living document using the feature layout and custom fields. We created a Use Case(s) custom table that we turned into a one-to-many relationship custom field as each feature could have many use cases and the custom table allows us to create a running list in each individual feature. This custom table has multiple columns to be filled out per Use Case to ensure all the details have been captured and documented. In our previous process, this was a required field. Due to the type of this custom field, we are not able to add it to our create screen and make it required. We need the ability for this field to be a required field on our create screen as this is really the "beef" of why this feature is needed. Lastly, Use Cases is not the only one-to-many relationship we have, so there is a need for multiple one-to-many relationships to be available on the create screen as required fields.