Date-Time Field | FAQs - Zoho Forms

How to ensure that users schedule a meeting on a date and time that falls between the date of their response and 5 days after it?

To configure this, let's first split the date-time range: 
Start Date: Any date on or after the Date of Response + Future Time
End Date: Any date on or after 5 days from the Date of Response

Calendar
  1. Drag and drop a Date-Time  field on your form builder.
  2. In the Properties of the Date-Time field, from the Allowed Date & Time dropdown, select Range.
  3. Under Starts From , select Date of Response  from the dropdown as shown.
  4. Under Ends On, click Additional Options and set the range as Date of Response + 5 Days.
    Range Ends On
  5. Select Allow Future Time Only option.

    Allowed Date & Time