# Dropbox::Sign::SubFieldOptions
This allows the requester to specify field options for a signature request.
## Properties
| Name | Type | Description | Notes |
| ---- | ---- | ----------- | ----- |
| `date_format`*_required_ | ```String``` | Allows requester to specify the date format (see list of allowed [formats](/api/reference/constants/#date-formats))
**Note**: Only available for Premium and higher. | |