If the asset picker contains a Search tab, you can locate items by specifying search criteria. A list is displayed that contains all the items that meet the query.
To find all assets of the type you want, choose All:
You can narrow the search by querying specific properties. The menu choices are specific to the asset type—in this case, Whose or Whose Name or ID Contains:
In the following example, clicking Whose lets you query for all roles whose Name property contains the string Buyer:
You can further narrow the search criteria by clicking Add Criteria and providing more information about the desired role. You can create multiple criteria that query on different properties, specifying to use the query operator AND or OR:
To remove a set of criteria, click the corresponding Remove 
icon.
