title: How to copy field in PivotTable
body: <p>I want to copy a field in the PivotTable summary area. Below is my PivotTable:</p>
  
  <pre>
  Group_Age Sum of attrition_flag Count of acct_id Max of age
  1            73            661             27
  2            65            663             37
  3            54            779             57
  4            32            467             59
  5            40            725             62</pre>
  
  <p>Now if I also want to add Min of age, how do I do that?  </p>
  
  <p>Currently I am trying to copy and paste field "Max of age" in the summary area and change the field settings, but I am unable to copy and paste.</p>