Adding the following snippet to functions.php will allow WordPress users with the permission of “editor” to actually be able to see and edit Gravity Forms in the admin area of WordPress.
// ----- Allow users with editor permissions to see Gravity forms
function add_grav_forms(){
$role = get_role('editor');
$role->add_cap('gform_full_access');
}
add_action('admin_init','add_grav_forms');