This summary is not the rule. The rule text controls.
If you want to raise certain legal challenges in a criminal case, like objecting to how the charges were brought or where the case is being heard, you have to do it by a certain deadline. This rule spells out when that deadline is.
In circuit court, you need to file these motions at or before your arraignment, which is the hearing where you formally enter your plea. The court can also set a later deadline if it chooses. In district court or municipal court, you need to file the motion at the same time you enter your plea, or earlier.
The court has some flexibility here. If you have a good reason, the judge can give you more time to file the motion, even if the normal deadline has passed. On the other hand, the judge can also shorten the amount of time you have, again if there's a good reason to do so. The main point is that these challenges need to happen early in the case, not right before or during trial.
