Glad to hear you found the answer, @JoeRiese!
Yes, you can do it via UI too. Have in mind, that in production environment you will have replicate the ODBC data source settings to include this metadata change.
You could also achieve the same result directly in the SQL query by increasing the Description column length to 1000, like this:
select * from value WITH (meta='Description: string(1000);YourOtherColumn: int32')