NavHost.kt

@Composable
fun NestedNavigationExample() {
    val navController = rememberNavController()
    NavHost(
        navController = navController,
        startDestination = Screens.Home.route
    ) {

        navigation(
            startDestination = Screens.Home.Login.route,
            route = Screens.Home.route
        ) {
            composable(route = Screens.Home.Login.route) {
                LoginScreen {
                    navController.navigate(it)
                }
            }
            composable(route = Screens.Home.Register.route) {
                RegisterScreen {
                    navController.navigate(it)
                }
            }
        }

        composable(route = Screens.Dashboard.route) {
            DashboardScreen {
                navController.navigate(it)

            }
        }
    }
}