title: Laravel nova - How to remove required validation from BelongsTo relationship?
body: <p>I have a Nova resource named "Partner" with relationship to another Nove resource named "Rate".</p>
  
  <pre><code>BelongsTo::make('Rate*', 'customrate', 'App\Nova\Rate')-&gt;onlyOnForms()
  </code></pre>
  
  <p>Now when user try to create a parter, the select field to choose rate is mandatory.</p>
  
  <p>Client doesn`t want to keep it mandatory to choose a rate for partner. Any solution for this problem?</p>