> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IRT desk groups

Download sample file: [IRTDeskGroups.csv](../assets/csv/IRTDeskGroups.csv)

This file offers a way to provide multiple membership groups for IRT Desk.<br />Note: To switch to this mechanism, you must set `irt-desk-groups.enabled=true`. This adds a new hierarchy to the cube [IRT Group](../cube/irt-group), which can be used to select which group of books are used in the IRT desk.

This IRT Desk Groups file type is identified using the pattern: **\*\*/IRTDeskGroups\*.csv\{,.gz}** (as specified by irt-desk-groups.file-pattern). A sample file is `IRTDeskGroups`. This file is loaded using the **IRTDeskGroups** topic. See the [Topic Aliases table](../dev/dev-ref-impl/dev-dlc/dlc-frtb-config#topic-aliases) for an understanding of the topic aliases associated with each topic.

|           |         |          |                   |                                                                                                                                            |             |
| --------- | ------- | -------- | ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ----------- |
| **Field** | **Key** | **Null** | **FieldType**     | **Description**                                                                                                                            | **Example** |
| Book      | Y       | N        | String            | Name of the Book.                                                                                                                          |             |
| IRT Group | N       | Y        | String            | Name of the membership group.                                                                                                              |             |
| IRT Flag  | N       | Y        | ‘Y’ or ‘N’        | Indicates whether the desk is an Internal Risk Transfer (IRT) desk. ACR is calculated separately for desks flagged as IRT. Defaults to ‘N’ |             |
| AsOfDate  | Y       | N        | Date ‘YYYY-MM-DD’ | Timestamp (at close of business) for the data.                                                                                             |             |