title: Multibranch Pipeline - configure branch projects
body: <p>When I create a plain pipeline project I have the option to periodically poll the scm and if changes are detected, the build is run. that worked well for me.</p>
  
  <p>Now I created a multibranch pipeline and added 2 branches. However, in the configuration I can not set the same as in the normal pipeline project, because it tells me I can only view the configurations of the sub-branch-projects.</p>
  
  <p>Maybe I'm also doing it wrong, so I try to tell you what I actually want to achieve.</p>
  
  <p>I have a PHP project inside of a Git repository. There are two branches that I want to be built on new commits (when pushed to the main repository)
  The main repository resides on a self hosted version of Bitbucket Server. If possible, I want to avoid hooks and let Jenkins poll for changes on the bitbucket server. So how can I achieve that?</p>