Tips on Customizing id:CRM Contacts & Companies

How to Hide id:СRM Contacts & Companies Admin Menus

function plt_hide_idcrm_contacts_companies_menus() {
	//Hide "id:CRM Contacts".
	remove_menu_page('idcrm-contacts');
	//Hide "id:CRM Contacts → Contacts".
	remove_submenu_page('idcrm-contacts', 'edit.php?post_type=user_contact');
	//Hide "id:CRM Contacts → Add contact".
	remove_submenu_page('idcrm-contacts', 'post-new.php?post_type=user_contact');
	//Hide "id:CRM Contacts → Contacts Statuses".
	remove_submenu_page('idcrm-contacts', 'edit-tags.php?taxonomy=user_status');
	//Hide "id:CRM Contacts → Contacts Sources".
	remove_submenu_page('idcrm-contacts', 'edit-tags.php?taxonomy=user_source');
	//Hide "id:CRM Contacts → Companies".
	remove_submenu_page('idcrm-contacts', 'edit.php?post_type=company');
	//Hide "id:CRM Contacts → Add company".
	remove_submenu_page('idcrm-contacts', 'post-new.php?post_type=company');
	//Hide "id:CRM Contacts → Companies Statuses".
	remove_submenu_page('idcrm-contacts', 'edit-tags.php?taxonomy=comp_status');
	//Hide "id:CRM Contacts → Schedule".
	remove_submenu_page('idcrm-contacts', 'edit.php?post_type=contact_event');
	//Hide "id:CRM Contacts → Add Event".
	remove_submenu_page('idcrm-contacts', 'post-new.php?post_type=contact_event');
	//Hide "id:CRM Contacts → Event Types".
	remove_submenu_page('idcrm-contacts', 'edit-tags.php?taxonomy=contact_events');
}

add_action('admin_menu', 'plt_hide_idcrm_contacts_companies_menus', 31);

Where do I put this code?

How to Hide id:СRM Contacts & Companies Meta Boxes

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

	//Hide the "Company Info" meta box.
	remove_meta_box('idcrm_contacts_settings', $screen->id, 'normal');
	//Hide the "Event Info" meta box.
	remove_meta_box('idcrm_event_settings', $screen->id, 'normal');
}

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