Delegating permission to approve Quarantined Mobile Devices in Exchange Online

VasilMichev, Thank you for the response. I went ahead and added the mail-enabled security group to the Organization Client Access management role. However, when I log in as someone in that group, I'm not able to list any quarantined devices under Mobile --> Mobile device access. I see "error executing cmdlet."

If I try to go via Recipients --> Mailboxes, I see the list of mailboxes, but I can't click on any of them to get the settings I see in my administrative account.  

If I run a 

Get-ManagementRoleAssignment -Role 'Organization Client Access' | Select * | ogv

I see this:

I attempted to add 

Get-Mailbox

To the role by running: 

Add-ManagementRoleEntry 'Organization Client Access\Get-Mailbox'

But it looks like I can't modify OOB Management roles.

What is it that I am missing?

Thanks

Steve