Ext Links and Part Cues

 Hello everyone.

How do I put different Execute Strings in Ext Links in their corresponding Part Cues?

Example; Cue 1 part 1 (Ext Links) (/cue/2.2/start)
                          Part 2 (Ext Links) (/cue/2.3/start)

In (Ext Links) of a cue can be placed different macros?

Thanks in advance.