Password Protect Calendar Entry
Hello. Is there a way to allow someone to password protect a new calendar entry? I am looking to create a group calendar that multiple individuals can use, to share a park pavilion booking system. Zoho Calendars seems to have what I am looking for, except for the fact that I'd like to be able to ensure that if Person A books the pavilion on a certain date, Person B cannot delete Person A's "reservation" and place their own. I am hoping that, when Person A books the pavilion (by making an entry on the Zoho Calendar), they can also password protect it, so that only they can make changes or delete it. Note I am not looking to password protect access to the entire calendar, but rather just an individual entry on that calendar. In the above case, Person A would have complete read/write access, whereas Person B (and others) would have only read access.
Or, are calendar entries only changeable by the original author? (Another way in which to achieve what I'm looking for).
Thank you for your help.