Tips on Customizing Simple Giveaways

How to Hide Simple Giveaways Admin Menus

function plt_hide_giveasap_menus() {
	//Hide "Giveaways".
	remove_menu_page('edit.php?post_type=giveasap');
	//Hide "Giveaways → All Giveaways".
	remove_submenu_page('edit.php?post_type=giveasap', 'edit.php?post_type=giveasap');
	//Hide "Giveaways → Add New".
	remove_submenu_page('edit.php?post_type=giveasap', 'post-new.php?post_type=giveasap');
	//Hide "Giveaways → Subscribers".
	remove_submenu_page('edit.php?post_type=giveasap', 'giveasap-users');
	//Hide "Giveaways → Entries".
	remove_submenu_page('edit.php?post_type=giveasap', 'giveasap-subscriber-entries');
	//Hide "Giveaways → Settings".
	remove_submenu_page('edit.php?post_type=giveasap', 'giveasap_settings');
	//Hide "Giveaways → Documentation".
	remove_submenu_page('edit.php?post_type=giveasap', 'giveasap_documentation');
	//Hide "Giveaways → Integrations".
	remove_submenu_page('edit.php?post_type=giveasap', 'giveasap_integrations');
	//Hide "Giveaways → Reports".
	remove_submenu_page('edit.php?post_type=giveasap', 'sg_reports');
	//Hide "Giveaways → About".
	remove_submenu_page('edit.php?post_type=giveasap', 'giveasap_about_page');
	//Hide "Giveaways → Upgrade".
	remove_submenu_page('edit.php?post_type=giveasap', 'giveasap-pricing');
}

add_action('admin_menu', 'plt_hide_giveasap_menus', 1000000000);

Where do I put this code?

How to Hide Simple Giveaways Meta Boxes

function plt_hide_giveasap_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Users" meta box.
	remove_meta_box('giveasap_users', $screen->id, 'side');
	//Hide the "Have an Idea?" meta box.
	remove_meta_box('giveasap_ideas', $screen->id, 'side');
	//Hide the "Giveaway" meta box.
	remove_meta_box('sg-metaboxes', $screen->id, 'advanced');
}

add_action('add_meta_boxes', 'plt_hide_giveasap_metaboxes', 20);

How to Hide the "Simple Giveaways Overview" Dashboard Widget

function plt_hide_giveasap_dashboard_widgets() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Remove the "Simple Giveaways Overview" widget.
	remove_meta_box('sg-dashboard-overview', 'dashboard', 'normal');
}

add_action('wp_dashboard_setup', 'plt_hide_giveasap_dashboard_widgets', 20);