Exchange 2013 Create Room Mailbox

I have created a room mailbox for a conference room and set the following powershell......

Set-CalendarProcessing -Identity "Ramsey Conference Room" -AutomateProcessing AutoAccept -DeleteComments $true -AddOrganizerToSubject $true -AllowConflicts $false

When I go to book the room it allows me, but it shows "BUSY" in the Room Calendar.  When I double click on the meeting it says I do not have permission.

How can I get the room calendar to allow access to ALL users and Automatically accept all invites..... I would like to use powershell for this....
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Joseph DalyCommented:
This is for 2010 but I believe this is what you are looking to do

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