I have seen that the Used by Field on assets is strictly tied to user-field. This is ok for laptops and such, but for IT Services, servers, databases, etc, it is usually not a user, but a department or group who uses it. 

I can create a custom field, but then I wouldn't be able to show it on the summary list. 

It would be nice if we the field could have either users or groups, or if not possible, at least have a Used by Group addional to the Used by field.

Thanks

Nissy