"Kevin Malaysia" wrote in message
...
Hi Gordon,

the whole idea of sharing an online calendar is that we can access our
schedules off site.

Ah. you didn't mention that in your OP.
having used the Office Online Calendar sharing, I find it flaky, and it does
NOT (AFAICS) allow sharing of tasks.
I think your best solution would be to set up a server to which your users
can VPN and share calendars there.