I first created 2 events, representing the Graduation ceremonies for the bachelors and master's students at NUS. Note that this is just an arbitrary example I came up with.

Notice that they have the same name. This is fine, for now.
Next, I tried to assign a person, Amy, to an event with name Graduation, by using the command link 1 Graduation:

This is allowed. However, it is ambiguous as we do not know which Graduation event Amy will be attending.

One suggestion I have is to assign to event via event index instead.