title: Grouping matrix in Power BI
body: <p>I am new to Power BI and I have a very basic problem with a matrix object. I was following a tutorial to create a table where my rows are months, my columns are years and the value is the Revenue. However, when I drop the columns the matrix does not show the details by year/month, but automatically summarize al data.</p>
  <p>Matrix totals:<br />
  <a href="https://i.stack.imgur.com/Tqmt1.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Tqmt1.jpg" alt="Matrix totals" /></a></p>
  <p>Can some one tell me is there is any property that I need to change to show all matrix data?</p>
  <p>Matrix all  data:<br />
  <a href="https://i.stack.imgur.com/YOrex.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YOrex.jpg" alt="Matrix all  data" /></a></p>
  <p>Relationships:<br />
  <a href="https://i.stack.imgur.com/4Zmwa.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4Zmwa.jpg" alt="Relationships" /></a></p>