As it currently stands it is not possible to delete users and groups within Autodesk Vault.
This is a problem. I understand Autodesk's stance on that the users need to be retained for historical reasons, however the management side of things needs to be improved.
For example I created a group and users that were never used. Why can't I delete them? Objects that were never used should be allowed to be deleted. Also as the database grows and users are hired and terminated, the list will grow to an unmanageable mess.
What has happened to me is that I am in the middle of implementing Vault for my company. When I first set it up I created users. However, since then we have switched to a Domain and have now imported the Domain users and groups to use. Now I have groups and users that have never been used that I have no way of deleting or using for anything else.
I have found blogs and forum posts suggesting that users be diabled and renamed so that they are sorted appropriately. This is a hack solution at best and not a real solution to the problem.
As I see it two things need to happen:
1. Unused users and groups need to be allowed to be deleted.
2. There needs to be additional options and sorting methods for used users and groups that are no longer active. ie. Once they are disabled they are moved to a different list and only retained for historical purposes.