Getting no permission when try to edit the share calendar

[Raymond]

Dear all,

I've getting the issue of no access right to edit the share calendar from
someone no matter in Outlook 2003/2007.

One of the user using the Outlook 2007 to share his/her calendar for couple
users around the world. However, I've get the no permission when try to
double click and adding the new appointment even granted to the Owner
permission but the problem is not all the users getting the same since some
users can edit or add anything into the share calendar.