This is the general view of the whole content in EntryPointActivity (it's been simplified for better understanding)

EntryPointActivity.kt

   setContent {
            SpaceXTheme {
                val bottomNavigationItems = listOf(
                                            BottomNavigationScreens.Dashboard,
                                            BottomNavigationScreens.Launches
                                        )
                val navController = rememberNavController()

                Scaffold(
                  bottomBar = {
                    BottomNavigation(navController, bottomNavigationItems)
                  }
               ) {  
                  NavHost(navController, startDestination = BottomNavigationScreens.Dashboard.route) {
                      composable(BottomNavigationScreens.Dashboard.route) {
                          InitDashboardScreen()
                      }
                      composable(BottomNavigationScreens.Launches.route) {
                          InitLaunchesScreen()
                      }
                 }
           }
       }