This is for fighters only.
Please always clear the slot (using the clear button when you choose your proficiency) if there is already text in it before choosing a specialization or removing one. Please note that even if you change one specialization to another it will mess things up, so please always clear it before choosing/removing a specialization. The problem that will occur will not be at your advantage and you will have to clear any slot for it to be solved and for you to be able to proceed further in your registration.