We are in the process of migrating our company from Lotus Notes to Exchange 2013. We installed Exchange with split permissions and I use my Account Operator to administer Exchange. We have calendars in Notes that are set up as Mail users for divisions to use as their "Shared Calendar" to put vacation time, hours, etc... I wanted to create a Shared Mailbox in Exchange to be used at the "Shared Calendar". I tried to create the shared mailbox in the EAC, but I got access denied/insufficient rights.
I then added a new user to AD then went into the EAC and created the mailbox from the user I just created. All is fine there. The issue comes when I try to use the Powershell and run this command: 'Set-Mailbox -Identity disproce.calendar@abc.org -Type Shared'. I once again get the access denied/insufficient access error. What roles/permissions need to be modified to be able to create a shared mailbox?