Change Forms Column Layout

I’ve recently discovered this product and it seems to be well designed. However, I have a question regarding forms.
The forms in the “Add” pages are all what appears to be spanning all col-12. What I’m wondering is, am I able to have a 4x3 column form? By that I mean 3 columns with a col-md-4 class?

For those that are wondering this same thing, you may use VS Code to modify the layout really easily.