Using ECS, it is possible to search for UDRs or batches matching any filter criteria with the Search ECS window as shown below
Search ECS dialog
The result of the search is displayed in the ECS Inspector window shown below, where it is possible to view the UDR and edit the fields by clicking on UDR Type.
Search results shown in ECS inspector
In the Inspector you can also add tags on selected UDRs. These tags can then be used as a search criteria in the Search ECS dialog. The different search settings you make in the Search ECS dialog can also be saved and reused at a later stage. If you have a filter saved, you can also use this when configuring what the ECS Collection agent should collect.