Tips on Customizing Simple Job Board

How to Hide Simple Job Board Admin Menus

function plt_hide_simple_job_board_menus() {
	//Hide "Job Board".
	remove_menu_page('edit.php?post_type=jobpost');
	//Hide "Job Board → All Jobs".
	remove_submenu_page('edit.php?post_type=jobpost', 'edit.php?post_type=jobpost');
	//Hide "Job Board → Add Job".
	remove_submenu_page('edit.php?post_type=jobpost', 'post-new.php?post_type=jobpost');
	//Hide "Job Board → Job Categories".
	remove_submenu_page('edit.php?post_type=jobpost', 'edit-tags.php?taxonomy=jobpost_category&post_type=jobpost');
	//Hide "Job Board → Job Types".
	remove_submenu_page('edit.php?post_type=jobpost', 'edit-tags.php?taxonomy=jobpost_job_type&post_type=jobpost');
	//Hide "Job Board → Job Locations".
	remove_submenu_page('edit.php?post_type=jobpost', 'edit-tags.php?taxonomy=jobpost_location&post_type=jobpost');
	//Hide "Job Board → Job Tags".
	remove_submenu_page('edit.php?post_type=jobpost', 'edit-tags.php?taxonomy=jobpost_tag&post_type=jobpost');
	//Hide "Job Board → Applications".
	remove_submenu_page('edit.php?post_type=jobpost', 'edit.php?post_type=jobpost_applicants');
	//Hide "Job Board → Settings".
	remove_submenu_page('edit.php?post_type=jobpost', 'job-board-settings');
	//Hide "Job Board → Wizard".
	remove_submenu_page('edit.php?post_type=jobpost', 'job-board-wizard');
	//Hide "Job Board → Add-ons".
	remove_submenu_page('edit.php?post_type=jobpost', 'sjb-add-ons');
}

add_action('admin_menu', 'plt_hide_simple_job_board_menus', 14);

Where do I put this code?

How to Hide Simple Job Board Meta Boxes

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

	//Hide the "Job Features" meta box.
	remove_meta_box('jobpost_metas', $screen->id, 'normal');
	//Hide the "Application Form Fields" meta box.
	remove_meta_box('jobpost_application_fields', $screen->id, 'normal');
	//Hide the "Job Data" meta box.
	remove_meta_box('simple-job-board-post_options', $screen->id, 'normal');
	//Hide the "Application Status" meta box.
	remove_meta_box('sjb-application-status', $screen->id, 'side');
}

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

How to Hide the "Simple Job Board Stats" Dashboard Widget

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

	//Remove the "Simple Job Board Stats" widget.
	remove_meta_box('sjb_dashboard_widget', 'dashboard', 'side');
}

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