How to Hide Brevo - Email, SMS, Web Push, Chat, and more. Admin Menus

function plt_hide_mailin_menus() {
	//Hide the "Brevo" menu.
	remove_menu_page('sib_page_home');
	//Hide the "Brevo → Home" menu.
	remove_submenu_page('sib_page_home', 'sib_page_home');
	//Hide the "Brevo → Forms" menu.
	remove_submenu_page('sib_page_home', 'sib_page_form');
}

add_action('admin_menu', 'plt_hide_mailin_menus', 10000);

Where do I put this code?