multiple emails

Hello all, I am looking for little bit of guidance, I would like to set up, a bundle of emails , that will stay with our organisation, we are a volunteer sports club , and we have found that as we change roles and move on our email accounts are no longer accessible , is it possible to create number of departmental email address , that can all be recovered under 1 parent email address , we currently have 1 licensed 365 account , any help our guidance would be very much appreciated