Just place in in a text file and you should be good. Name can be anything you want.
The most commonly used enrichment is adding the full displayname to events where normally only the user ID is shown. Be aware though that using data enrichment can overwrite other values if you select a custom type field for enrichment that is already used in a specific event. Also, only string types (1-10) may be used for enrichtment. Random strings are not allowed (unfortunately).