You can rename an existing event type using the Events Development perspective in Designer.

When you use the rename feature to rename an event type, this not only renames the file but also where necessary adapts the contents of the file. This is because the contents of files of these types include a reference to the file name.

For this reason, if you wish to rename a file, use only the Rename feature provided rather than using the file renaming facility of the host operating system.