Mautic bundle view overrides?

General Discussion
1

I am a novice developer new to Symfony apps. Is there a preferred method with overriding CoreBundle views (i.e. Adding a Support Button to the Mautic Dashboard Navbar) and still keep the ability to ‘one-click update’ intact without it overriding any modifications made to the bundle views?

2

I am a novice developer new to Symfony apps. Is there a preferred method with overriding CoreBundle views (i.e. Adding a Support Button to the Mautic Dashboard Navbar) and still keep the ability to ‘one-click update’ intact without it overriding any modifications made to the bundle views?