Force a date/time in K1000 help desk
Answer Chosen by the Author
Unfortunately KACE doesn't currently support that kind of conditional logic. Head over to the UserVoice forum to vote up this functionality. http://www.itninja.com/link/k1000-uservoice-feedback-forum
You may be able to write some ticket rules to simulate this functionality on ticket save. Others here might have some similar use cases and configurations.