This mockup describes a UI for a trait to define a required visit date. It allows to specify a single date, a date range, and also covers the common use case that the last visit must have occurred within a specified period.

This mockup only supports specifying a single date, not several. It also focuses on a date only and leaves away any time values.

The UI of a trait is largely depending on the trait itself, but it also has some aspects it shares with other traits. The UI described here acts as a good example of a trait that uses an embedded dialog, similar in appearance to the embedded dialogs used in small apps, to collect more complex data. While such a dialog is preferable, the alternative would be to open a light dialog, preferably attached to the input field, as is shown by the last of the attached mockups and the attached visual design.