Should you keep functions of Vizard model in the same page class or use different page class writing automation code with Java Selenium?

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As you can see in the picture, I got a vizard model for adding new facility, but page is not reloaded, should I add functions of vizard in another page class? or keep it in the same FacilitiesPage class? PS: you can't use vizard from another place rather then FacilitiesPage.