Reviewers can select one tag only from a single-choice group. For example, you might use a single-choice group to ask the question "Is this item external email or internal email?". As an item cannot be both, you might invite reviewers to choose between the two options by providing tags that are labeled "Internal" and "External".
A single-choice group contains the new tags that you define when you create the group. Unlike multiple-choice tag groups, you cannot assemble a single-choice tag group from the existing tags in a case.
To create a single-choice tag group
If Discovery Accelerator lists a lot of cases, you can filter the list with the fields at the top of the pane. As well as filtering the cases by name, you can choose whether to list any research folders that are associated with them.