[TYPO3-calendar] difference by setting the owner of a calendar

[Pierre Nya]

hi folks,

what is the difference between
-entering a calendar in the fe_user field "The users private calendar" (by 
adding or editing a fe_user)
and
- entering a fe_user in the calendar field "Owner" (by adding or editing a 
calendar)?


Background is the following:
i have a website with over 300 fe_users. Now some of them should have the 
possibility to add events for the others. I readed that i have to create 
calendars for all fe_users so that it will be possible to enter an event 
which will be only visible for them. Coz i don't want this creation-process 
to be done each time manually, i want to make a post-function for either 
fe_user or cal so that if a user is created then automatically a calendar 
will also be create with his name. Now i want to know the better way for 
this dependency. After the fe_user is created, should i:
- create a calendar and add the fe_user id in the field owner of the 
calendar (table tx_cal_calendar) or
- create a calendar and add the calendar id in the field tx_cal_calendar of 
the table fe_users?

Thanks.