You can control which number are shown in the popup, by going to “Toolbox > Settings > Personnel Tree” and clicking the button called “Personnel Management Display Setup”. That will bring up a dialog that looks like this:
For each value that is described on the left side of the dialog, you can choose whether to show the value in the popup, in the tree (the personnel tree in the Advanced Module), both or nowhere. You can also control what color the numbers have when displayed in the personnel tree.
For example, the setup shown above might generate a view like this: