Exchange Online Properties

Hi Team. 

I have logged this with support but keen to see any real world suggestions. Our Service Desk teams are trying to request access to the Exchange Online admin console and we are trying our best to keep all administration within ARS. They are saying they need it for the items below. Some i can see and some are not visible to me. 


Mailbox delegation
Send on behalf
Send As *** I can see this in the WI
Full Mailbox Access *** I can see this in the WI

Setting automatic replies (Out of Office)

Viewing the Exchange Online mailbox usage statistics – mailbox size

Should i be able to see / do everything in the ARS WI they are asking?