It is now possible to add date restrictions to date and date/time questions in DWP-C. However, you cannot add time restrictions to either Date/Time or Time questions.
For many quicker requests, it would really help to have the ability to allow definition of a a date/time or time question where you could define restrictions on the time.
For example, I have an automated service that requires that the server be restarted, so I want to define a question to ask the user for the planned shutdown time of the server. However, since the shutdown requires an approval that has a minimum processing time of 1 hour, I want to define the window start time at least 1 hour after the request and the window end for example in 5 days time.