Once your case is in litigation, it is to some extent out of your hands. When dates are scheduled, you may or may not be able to change them depending on the reason and how far ahead of time you make the request. Court rules will also give the opposing party time to file a response to your request. If that means a ruling on your motion would be too late, you may need to ALSO file a motion to shorten time with the court. The more urgent your reason for changing the date, the more likely it will be granted. If you are asking for a continuance due to needing to hire an attorney or lack of preparation, there is a significant chance your request will be denied. You may also be able to have your appearance waived in some circumstances. Or if you are Kim Kardashian, you can just skip court if you have a new perfume debut.