How to Hide UpiCRM - Lead Management and Contact Form DB for all forms. Admin Menus

function plt_hide_upi_crm_universal_crm_solution_menus() {
	//Hide "UpiCRM".
	remove_menu_page('upicrm_index');
	//Hide "UpiCRM → UpiCRM".
	remove_submenu_page('upicrm_index', 'upicrm_index');
	//Hide "UpiCRM → Lead Management".
	remove_submenu_page('upicrm_index', 'upicrm_allitems');
	//Hide "UpiCRM → Data Types & Fields".
	remove_submenu_page('upicrm_index', 'upicrm_settings');
	//Hide "UpiCRM → Email Notifications".
	remove_submenu_page('upicrm_index', 'upicrm_email_notifications');
	//Hide "UpiCRM → Auto Lead Management".
	remove_submenu_page('upicrm_index', 'upicrm_lead_route');
	//Hide "UpiCRM → Lead Aggregation".
	remove_submenu_page('upicrm_index', 'upicrm_integrations');
	//Hide "UpiCRM → Import".
	remove_submenu_page('upicrm_index', 'upicrm_import');
	//Hide "UpiCRM → Export".
	remove_submenu_page('upicrm_index', 'upicrm_export');
	//Hide "UpiCRM → GDPR".
	remove_submenu_page('upicrm_index', 'upicrm_privacy');
	//Hide "UpiCRM → Web Services".
	remove_submenu_page('upicrm_index', 'upicrm_webservices');
	//Hide "UpiCRM → Users Center".
	remove_submenu_page('upicrm_index', 'upicrm_users_center');
	//Hide "UpiCRM → Affiliates Center".
	remove_submenu_page('upicrm_index', 'upicrm_affiliate');
	//Hide "UpiCRM → Social Networks Integration".
	remove_submenu_page('upicrm_index', 'upicrm_fb_banner');
}

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

Where do I put this code?