This summary is not the rule. The rule text controls.
Here's what this rule means for someone dealing with guardianship of a minor's affairs (called "tutorship" in Louisiana).
When a court appoints someone who is not the child's parent to serve as tutor, that person has 10 days to officially qualify for the job. Qualifying usually means completing steps like taking an oath or posting a bond, depending on what the court requires. If the person does not finish these steps within 10 days, the court can step in and cancel the appointment. This can happen because the court decides to act on its own, or because someone else involved in the case asks the court to do it.
If the appointment gets revoked, the court will quickly name another qualified person to take over as tutor. This keeps the process moving so the child's affairs do not sit without someone in charge.
The rule also allows some flexibility. If the person appointed needs more time and has a good reason for the delay, the court can extend the 10 day deadline. This gives people a fair chance to complete the process without losing the appointment, as long as they can show the court a valid reason for needing more time.