Navigate to different form depending on Drop Down value


I am really knew to this tool and trying to learn how to use it. I have been reading about this entire day but I can't find anything that would guide me correct way. I have a form with few fields in it, after I select Drop Down I need to navigated to another form which has the rest of the fields to input. Would this be possible to achieve?

Dear @Lukas_Sliuzas,
Okay, what about the content on this form, should it be saved or just redirect user without saving the form? If it needs to be saved, but some required fields are missing, what to do then?

Also, maybe open another form in dialog? Or in full screen?