Hi @MaciejM84765360,
The native UI will not fully do this, so a script step ends up being the reliable path.
For setting today dynamically, in the Set Field Values or Test Run Data Set step, enter a scripted value instead of a fixed date, something like javascript: gs.daysAgo(0). ATF evaluates that as a server-side expression rather than a literal string. gs.daysAgo() takes an integer, positive numbers go back in time, negative numbers go forward, so 0 gives you today. Same trick works for gs.daysAgo(-7) if you ever need a week from now.
For setting an empty value, this is the part the standard date picker struggles with, it generally will not let you submit a genuinely blank value. The workaround is to skip that step type for this purpose and use a Run Server-Side Script step instead, clearing the field directly, something like current.your_date_field.setValue('') followed by current.update(). That gives you a guaranteed empty value rather than fighting the UI.
For validating empty or today, the built-in Field Values Validation step only checks one condition per field with no OR logic between two states, so it will not cover this on its own. The workaround again is a Server-Side Script step, where you write the check yourself, comparing the field value against both an empty string and today's date, then pass or fail the test based on that.
