Show custom user roles on Assign to Host ID page

functions.php

add_filter('zvc_allow_zoom_host_id_user_role', 'vczapi_allow_host_id_roles');
function vczapi_allow_host_id_roles($roles) {
   $roles[] = 'your_user_role_slug_1';
   $roles[] = 'your_user_role_slug_2';
   return $roles;
}