JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. To Customize a User Field as Lookup Field After defining a new field, you can customize the field either as a Lookup Field or Description Field. To Customize a User Field as Lookup Field Click the Lookup Fields tab. Click the Add Lookup Fields button. From the drop-down list, find the User field just created as shown: Select the User Field, then define a Lookup Table to use for the field. Parent topic: Define User Fields