Would like to see the ability to use group names (rather than individual names), and reflect dynamic membership of the groups to group conference. This feature quickly becomes out of date if not manually maintained with employee turnover...

From Vocera documentation:

You cannot actually add a group to a conference, but you can add all its members to the conference. Specifically, if you select a group when you populate a conference, you add only those users who are group members at that time to the conference—the conference does not reflect the dynamic membership of the group.

[Source: Maple Grove Hospital; Vocera Case 00062044]