portainer/app/edge/components/edge-groups-selector/edgeGroupsSelector.html

<ui-select multiple ng-model="$ctrl.model" close-on-select="false" data-cy="edgeGroupCreate-edgeGroupsSelector">
  <ui-select-match placeholder="Select one or multiple group(s)">
    <span>
      {{ $item.Name }}
    </span>
  </ui-select-match>
  <ui-select-choices repeat="item.Id as item in $ctrl.items | filter: { Name: $select.search }">
    <span>
      {{ item.Name }}
    </span>
  </ui-select-choices>
</ui-select>