title: Excel: How can I add custom gridline to a chart?
body: <p>How can I add a custom horizontal line that has a label and it is at the exact same level as the first column in the chart (see the screenshot below). </p>
  
  <p>Can this be done in VBA?</p>
  
  <p><img src="https://i.stack.imgur.com/woCzn.png" alt="enter image description here"></p>