Shared Mailboxes are basic email accounts that multiple users can see. Shared Mailboxes are mostly used for role-based functions such as having an allotments@yourparishcouncil.gov.uk address for the 3 people that manage allotments, for example.
Video
Creating a Shared Mailbox
To create a Shared Mailbox;
Log into the Email Admin Panel
Go to Groups
Go to Shared Mailboxes
Click on Create
Enter a name for the mailbox
Email address field will auto-populate, but you can change this as required
Give a description for the mailbox
Click Proceed
You then have options for who can send emails to the mailbox;
Everyone. Anyone in the world is allowed to email this mailbox
Organisation Members. Anyone who has a gov.uk mailbox within your Local Council is allowed to email this mailbox
Group Members. Only those with access to the shared mailbox are allowed to email this mailbox
Only Moderators. Only moderators of the shared mailbox are allowed to email this mailbox
For an example like allotments, you'd want Everyone to be able to email it because it'll most likely be the public using it.
Adding Users
Click Add then Search and Add Organisation Users
Click the + button alongside all users you want to add
Click Add
Select one or more Moderators by changing the drop-down alongside each user from Member to Moderator.
Click Create
Once the Distribution list has been created you can add more users in the same way.