An event type is essentially a simple search definition, with no pipes or commands. To define an event type, first make a search. Let's search for:
Let's say these events are login events. To make an event type, choose Event type... from the Create menu, as shown here:
This presents us with a dialog, where we can assign a Name string and optionally any Tags(s) to this event type, as shown in the following screenshot:
Let's name our event type
We can now search ...