Problem with OWA

[Postmaster]

Hi,

From Outlook Web Access, when I create a new meeting and I choose a
ressource, the ressource don't tell me that the reservation is ok.
Moreover, the ressource don't put her status to "occupied".

But, if I create the same meeting from Outlook, I don't have this problem.
I will be notified and the ressource will be occupied.

Is it a bug or how can I fixe the problem?

Thanks in advance!