Change title of a button based on click event

Using Vue.js (Javascript), I have a form that contains 3 buttons. Each button has a label (i.e. “title”) based on a user’s permission group assignment. When the user clicks on the their respective button, a new form is displayed that should display a different ‘title’ at the top of the form. My issue is how to change the ‘title’ of the 2nd form that is displayed?