"Manage naming rules" in the "system" sections opens a wizard to create and manage naming rules.

In Pathfinder you can create naming rules for all objets, e.g. ports and cables.

• In the first step, Pathfinder lists all existing rules (1).
• You can add or remove naming rules  with "create" or "delete", respectively (2).
• Select the naming rule you would like to edit and click on "next" (3).You can also double click a naming rule.

^{Naming rule: overview}

• In the second step, you enter properties like name and description.
• Now you need to define for which type of object these rules will apply. You can define several rules per object.
• Click "next".

^{Naming rule: define properties}

• In the third step, Pathfinder lets you manage control elements and define their properties.
• Use "create"  to add new control elements.
• The left area lists the existing control elements. Choose a control element with the drop down menu.
• In the right area you can define the properties of the selected control element.
• The bottom of the screen shows you a preview on how these elements will influence the naming rules of the object.
• Click "finish"
  
  

^{Naming rules: manage elements}

There is also a detailled instruction on naming rules in the following video: