Hello,
As a jr developer I relay heavily on your documentation for code examples. I would like to ask if you could create some examples on how to create forms like this where you have grouped form-groups inline.

Thanks for your consideration.
Cannot help you without a JS Bin to reproduce the problem.
@mdo so this is how I would create a form with several 'inline-form' http://codepen.io/imcodingideas/full/jVZjRe/ but I don't ever really know if I'm doing it the 'bootstrap way' as bootstraps documentation really teaches us how to use it the way its intended and I think some 'checkout' form or 'registration' form example would benefit a lot of people.
Im sure a lot of us has tried to use .form-inline class as a div inside another form. The form I created, is it the best way to do it? Love bootstrap 4 utility classes.
Does bootstrap 4 have a float-label-control class so we have floating labels?
@imcodingideas Your example doesn't use .form-inline anywhere...
But generally speaking, to accomplish complex form layouts, using the grid system is The Right Way to do it.
I know it doesn't use .form-inline because it doesn't get padding/margin right. I'm not this great front end developer so like I said in my proposal that maybe an example registration form or checkout form would be beneficial for some developers.
@imcodingideas - You are looking for an example ( codepen ), so here you go
--> http://codepen.io/IamManchanda/pen/KNBgmo
But even i will also say that grid system is the right way to achieve form layouts.
I agree with others here that your best best is using the grid system. There's not much we'll do here to document this differently than our existing grid and form docs.