Remove the label if there is only one scope and no scope picking field is displayed.

src/Bundle/ChillActivityBundle/Form/ActivityType.php

@@ -88,8 +88,8 @@ class ActivityType extends AbstractType
 
         if (null !== $options['data']->getPerson()) {
             $builder->add('scope', ScopePickerType::class, [
-                'center' => $options['center'],
                 'role' => ActivityVoter::CREATE === (string) $options['role'] ? ActivityVoter::CREATE_PERSON : (string) $options['role'],
+                'center' => $options['center'],
                 'required' => true,
             ]);
         }