Please make viewing distribution groups members possible from the address book for Mac users. Please also make viewing what distribution groups a person is a part of possible.
Miikka Tuori commented
Please enable also the expanding of the Group on the recipient address field.
The address book in outlook on Mac fails to show the users/contacts/groups. this makes it very hard for everyone in the company to know what to search for, specially hard to find the email groups as you need to know the names of those groups!