Allow for grouping on multiple levels
When displaying the list grouped by subscriptions it would be helpfull if information on a lower level could also be grouped by another level (for example subscription) so things would like like :
Cost Center1
Subscription1
Services
Subscription2
Services
Cost Center2
1
vote
![](https://secure.gravatar.com/avatar/5abb7f070fff8a6892c94c99c4d987c1?size=40&default=https%3A%2F%2Fassets.uvcdn.com%2Fpkg%2Fadmin%2Ficons%2Fuser_70-6bcf9e08938533adb9bac95c3e487cb2a6d4a32f890ca6fdc82e3072e0ea0368.png)