How to postpone an arraignment a second time in municipal court.
Criminal Defense Attorney
Hire an attorney. Because if you continue to not appear the court will issue a warrant. Once you are arraigned most municipal courts are fairly reasonable when it comes to adjournments except for DWI cases.
Legal disclaimer: This answer does not create an attorney-client relationship and is based only on the limited information provided in the question.
You need permission from the court. They are not likely to give you more than one unless you have a lawyer or an emergency.
DUI / DWI Attorney
Some courts will allow you to enter a not guilty plea in Municipal Court by attorney's letter and thereby postpone the case. This is not always the case because not all Municipal Courts are run the same way.
Note: For informational purposes only. Seek an in person consultation with an attorney to be informed about all of your rights.