title: How do I change the concurrency levels in Redshift
body: <p>When I try to:</p>
  
  <pre><code>set wlm_query_slot_count to 10;
  </code></pre>
  
  <p>I get an error msg, "...query cannot run because wlm_query_slot_count is greater than the query concurrency for the queue, ... increase the query concurrency if you need more slots" </p>
  
  <p>I've searched and searched, but cannot figure out where I can change the concurrency level (I'd like to raise it from its current 5 to 10).</p>