To display the hit pans, right-click on the Controller panel and select "Pan View" from the drop-down menu.
Controller panel - Right-click menu:
You have the option to set panning for All samples or Groups only. Select one of the options from the menu or click the All Samples/Groups Toggle button.
To change hit panning, left click and drag your mouse over the controller panel.
Down is 100% left. Up right is 100% right. Pan is centered at C.
Double-clicking the label next to the Pan lable will allow you to type a value.