Tips on Customizing Project Supremacy V3 Lite

How to Hide Project Supremacy Lite Admin Menus

function plt_hide_project_supremacy_menus() {
	//Hide "Supremacy V3".
	remove_menu_page('prs-settings');
	//Hide "Supremacy V3 → Dashboard".
	remove_submenu_page('prs-settings', 'prs-settings');
	//Hide "Supremacy V3 → SEO Settings".
	remove_submenu_page('prs-settings', 'prs-seo');
	//Hide "Supremacy V3 → Reviews".
	remove_submenu_page('prs-settings', 'prs-reviews');
	//Hide "Supremacy V3 → Project Management".
	remove_submenu_page('prs-settings', 'prs-projects');
}

add_action('admin_menu', 'plt_hide_project_supremacy_menus', 11);

Where do I put this code?

How to Hide the "Project Supremacy - On Page SEO" Meta Box

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

	//Hide the "Project Supremacy - On Page SEO" meta box.
	remove_meta_box('prs_seo', $screen->id, 'advanced');
}

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