1. At the web server, locate the vroot folder for the Infinity application
  2. Locate and open the web.config file in a text editor
  3. in the <appSettings> section, edit or add the following line:
    <add key="SearchListMaxRecordsDefault" value="100" />
  4. Adjust value to equal the desired maximum result (up to 5000)

NOTE: Increasing this value may increase the time it takes for large searches to complete.

Also see the "Web.Config AppSetting documentation" found in the Utilities section off of the application's start page.