Every event on your calendar can have a required dress code.  You can set up the available choices by going to Site Configuration → Dress Codes, as shown here.

Click Add a New Item to add a Dress Code to this list.

The Dress Code should be a short name for this dress code.

The Description should be a brief description, which could contain small illustrations.

The name and description will be displayed on the calendar for every event that has this dress code, so we recommend keeping it as short as possible.