title: How to run jenkins job only once but with two conditions
body: <p>Thanks for looking into my concern.</p>
  
  <p>I have 3 jenkins jobs. JOb A, B &amp; C. </p>
  
  <ol>
  <li>Job A starts at 10PM at night.</li>
  <li>JOB B is a down stream of Job A and runs only if job A is success.</li>
  <li>Job C is a downstream job of job B</li>
  </ol>
  
  <p>Now I want job C to be triggered after successful completion of job B or at at a scheduled time. Problem is if I schedule job C as down stream as well as with a schedule. It runs twice.
  But, it should run only once.</p>
  
  <p>Please help me to achieve this.</p>