Office 365 Resource Mailbox - Default User - Default Permissions

Greetings.  We have multiple resource mailboxes set up for booking conference rooms.  As resources, they have the auto-attendant feature and check free/busy information.

I just found out that many end users have been booking their meetings (and changing/deleting) them directly in those resource mailbox calendars.  This is referred to as "Direct Booking" if I'm not mistaken.

I'm pretty sure this is a no-no and something I *do not* want end users to do.  I want them to schedule their meetings in their own calendars, then invite the resource (room) so that the auto-attendant will tell them if the meeting is "accepted" or "declined" in that room.

Here is my question. The rooms were set up with permissions for the "Default" all over the place - Editor, Custom, Contributor, etc.  I've read that I should change the permissions to "None" for Default.  I presume this still allows the room to be invited as a resource and have the system attendant work, but if they view the room directly, it won't show free/busy with the "None" permission.

P.S. We're using Outlook 2013 as the client.

Thoughts ? Suggestions ?
Thanks much.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Vasil Michev (MVP)Commented:
The 'default' value for the Default user for Resource mailboxes is AvailabilityOnly, I would live it like that or change to LimitedDetails.

PS C:\> Get-MailboxFolderPermission room:\calendar

FolderName           User                 AccessRights
----------           ----                 ------------
Calendar             Default              {AvailabilityOnly}

Open in new window


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
lapavoniAuthor Commented:
Perfect. Thanks, Vasil.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Office 365

From novice to tech pro — start learning today.