In the Advanced Printer Profiling... 

1. Measure the same target with the same device measured the same settings and then save the measurement files with similar names (i.e., RGB729_i1Pro_1.mxf and RGB729_i1Pro_2.mxf).
2. Select the “Measurement” workflow step in the printer profiling workflow.
3. Control-click (or Shift-click if .mxf are consecutive) the desired .mxf files in the “Assets” and then drag and drop them onto the "Measurement" workflow step. 
4. Proceed as normal to create the profile with the averaged measurement data.