This summary is not the rule. The rule text controls.
When picking a jury, both sides can object to jurors they don't think should serve. This rule explains the order these objections have to follow.
First, a side can challenge the entire jury panel if there's a problem with how it was put together. After that, objections move to individual jurors, starting with general disqualifications, like a juror not meeting basic legal requirements to serve. Next come objections based on implied bias, which are situations the law automatically treats as biased, such as a juror being related to someone involved in the case. Last are objections based on actual bias, where a juror shows real signs of not being able to judge the case fairly.
The key point is that a side can't jump around or mix these objections together. Each type of challenge has to be raised in its proper order, and all objections that fit within one category should be raised at that stage before moving to the next.