Most likely the "criminal complaint hearing" that you have written about is the first appearance in the criminal matter called an "arraignment". At the arraignment, the defennat who has been charged with the offense is read the complaint filed against him or her and makes a plea of guilty, not guilty or no contest.If you have been charged with the offense that you are writing about, I recommend that you consult with a criminal defense attorney about the matter that you have been accused of well before the arraignment.