What is the meaning of "to have one's ducks in a row"?

• Have one's duck in a row:
English Meaning- To get everything properly organized and under control.
 Bengali Meaning- সবকিছু সঠিকভাবে সংগঠিত এবং নিয়ন্ত্রণ করা।

• Example Sentence:
- She finally had her ducks in a row before the big presentation.
- Make sure to have your ducks in a row before the meeting.
- He needs to get his ducks in a row if he wants to meet the deadline.

Source: Collins Dictionary.