title: how to disable master branch in bamboo
body: <p>I have a bamboo plan with two branches, br1 and br2.</p>
  
  <p>currently, bamboo launches automatically every time there is a commit on the master branch, branch b1 and br2.</p>
  
  <p>I don't want bamboo to launch automatically when there is a commit on branch br1 and br2, but I do not want bamboo to launch automatically when there is a commit on the master branch.</p>
  
  <p>How to achieve this?</p>
  
  <p>(bamboo allows to disables branches, but I don't see how to disable the master branch)</p>
  
  <p>ps: I am aware that bamboo is a bad choice, and we are eventually moving to jenkins. however we still need to use bamboo for a while.</p>