When your company has set up grading groups in Admin, you can use them on the Style Level.
If the style you work on does not use a Size Range with grading Groups - everything looks just like it used to.
But if the Size Range has Grading Groups - you will default see the same Measurement chart as you normally do - there will be an extra drop-down - where you can select the Grading Groups.
You select the Grading Groups you need to look at.
Simply select them from the drop-down - set check-marks for those you need.
After you have selected them you will need to click outside the drop-down to display them.
Now your Measurement chart will only show the measurements for the groups you selected - each group is shown together.
The drop-down will have the yellow color as long as any grading group has been selected.